Pi

Decimal Digits: 10,000,000,000,050

Hexadecimal Digits: 8,304,820,237,260

By Alexander J. Yee

(Last updated: October 11, 2014)

 

Notable Large Computations:

Here is a list of notable large computations that have been done using y-cruncher.

Date Completed: Who: Decimal Digits: Compute Time: Computer: Comments:
October 7, 2014 "houkouonchi" 13,300,000,000,000

Compute:  208 days

Verify:  182 hours

2 x Xeon E5-4650L @ 2.6 GHz
192 GB DDR3 @ 1333 MHz
24 x 4 TB + 30 x 3 TB
World Record Size Computation
Validation File
December 28, 2013 Shigeru Kondo 12,100,000,000,050

Compute: 94 days

Verify: 46 hours

2 x Xeon E5-2690 @ 2.9 GHz
128 GB DDR3 @ 1600 MHz
24 x 3 TB
World Record Size Computation
October 16, 2011 Shigeru Kondo 10,000,000,000,050

Compute:  371 days
Verify:  45 hours

2 x Intel Xeon X5680 @ 3.33 GHz
96 GB DDR3 @ 1066 MHz
24 x 2 TB
World Record Size Computation
August 2, 2010 Shigeru Kondo &
Alexander Yee*
5,000,000,000,000

Compute:  90 days
Verify:  64 hours

2 x Intel Xeon X5680 @ 3.33 GHz
96 GB DDR3 @ 1066 MHz
16 x 2 TB
World Record Size Computation
May 1, 2010 Shigeru Kondo 1,000,000,000,000

Compute: 12 days, 9 hours

2 x Intel Xeon X5650 @ 2.66 GHz
96 GB DDR3 @ 1066 MHz
16 x 2 TB
Screenshot
Validation
March 22, 2010 Shigeru Kondo 500,000,000,000

Compute: 172 hours, 24 minutes

2 x Intel Xeon W5590 @ 3.33 GHz
144 GB DDR3
16 x 2 TB
Screenshot
Validation
March 15, 2010 Shigeru Kondo 250,000,000,000

Compute: 83 hours, 35 minutes

2 x Intel Xeon W5590 @ 3.33 GHz
144 GB DDR3
8 x 2 TB
Screenshot
Validation
February 23, 2010 Alexander Yee 100,000,000,000

Compute: 53 hours, 40 minutes

Intel Core i7 920 (Overclock 3.5 GHz)
12 GB DDR3 @ 1333 MHz
Asus Rampage II GENE
4 x 2 TB Hitachi
Torture Test for v0.5.2
December 19, 2009 W. Wong & R. Chang 50,000,000,000

Compute: 23 hours, 44 minutes

4 x AMD Opteron 8356 @ 2.3 GHz
128 GB DDR2
600 GB FusionIO
Computation Statistics
October 6, 2009 Shigeru Kondo 50,000,000,000

Compute: 31 hours, 11 minutes

2 x Intel Xeon W5590 @ 3.33 GHz
72 GB DDR3
1 TB Hitachi
Virtual Memory Thrashing
July 27, 2009 Shigeru Kondo 34,359,738,368

Compute: 8 hours, 38 minutes

2 x Intel Xeon W5580 @ 3.2 GHz
72 GB DDR3
1 TB Hitachi
New Speed Record?
February 3, 2009 A. Yee & R. Chan 31,026,000,000

Compute:  9 hours, 8 minutes
Verify:  13 hours, 17 minutes

"Nagisa" New Speed Record?

*This first world record for Pi was run entirely by Shigeru Kondo, but with a lot of support from me (Alexander Yee) to get it done. There was also a lot of back-and-forth testing between the two of us to stabilize the y-cruncher software before he could actually run the main computation.

 

After this first record, we had more or less learned what was needed. So from there on, all the later records were mostly on his own.

 

 

 

Selected Digits:

Below a list of selected digits. These can be used to verify your own computations.

3.
3.
1415926535 8979323846 2643383279 5028841971 6939937510 : 50
5820974944 5923078164 0628620899 8628034825 3421170679 : 100
243f6a8885 a308d31319 8a2e037073 44a4093822 299f31d008 : 50
2efa98ec4e 6c89452821 e638d01377 be5466cf34 e90c6cc0ac : 100
4610126483 6999892256 9596881592 0560010165 5256375678 : 10,000
6683008238 3404656475 8804051380 8016336388 7421637140 : 12,000
1173213138 9574706208 8474802365 3710311508 9842799275 : 15,000
2968106203 7765788371 6690910941 8074487814 0490755178 : 20,000
8353013617 8653673760 6421667781 3773995100 6589528877 : 25,000
5091576463 9074693619 8815078146 8526213325 2473837651 : 40,000
0652623405 3394391421 1127181069 1052290024 6574236041 : 50,000
1716133957 5779076637 0764569570 2597388004 3841580589 : 75,000
f169b5f18a 8c73ee0b5e 57368f6c79 f4bb7a5959 26aab49ec6 : 10,000
5b9db31d42 a7cec064fa 0e398d479a cab707be15 0a28f3754d : 12,000
6f9307bb8a 14b7194207 b5105c8184 d3c3a12ddc 77519f2967 : 15,000
048e85ffcf 7de4ab5d3b a794f55a19 ade71d485b ebf50c76da : 20,000
95b6c2fe57 bd0f1f3604 0be9593717 e742e40c6a cb3cc4804c : 25,000
68f51dffb6 9115c15118 a79a75c8c3 dd48243cc5 5a7792f7e3 : 40,000
08ce5db764 25c7b4bc66 1001cbc30e 805c6db26c 2a35ab5135 : 50,000
a3327fd065 f0c4d23f82 f48a26bb03 abbd9f66e0 1b4f748a88 : 75,000
7015078933 7728658035 7127909137 6742080565 5493624646 : 100,000
6136953089 9547584883 0242619627 5898594151 3780515805 : 120,000
8500384293 8167759796 1912729990 4591343960 4283622782 : 150,000
0400704911 1330970230 4687661585 7483135080 1444759928 : 200,000
5140252095 1792646811 5682982031 3618827396 4266233216 : 250,000
4956017828 2456727368 5631218502 0980470362 4641761986 : 400,000
4953622322 2219746596 1933252907 4042487602 5138195242 : 500,000
8761414451 9713784817 6211789772 4143554673 5467024250 : 750,000
4433887510 69558b3e62 e612bc302e c487aa9a6e a22673c1a5 : 100,000
29a1495caf 0959fceb05 7310cc4418 0a681b80ac d87224bcf6 : 120,000
71536e8a9d f5726f9e96 359c6e21f4 08b306e192 829f0b396c : 150,000
3e2ed27c44 bc12132a50 c3a822ef56 bbc81e2feb 5ca9556d6b : 200,000
19d0a1a806 4bdaaea805 cce3ffae23 60adc248e7 83d94e8399 : 250,000
5c47de610f 9004f270f6 6fe91a3e41 48b5e105a7 d3061c7da8 : 400,000
bc3e74041b 0e51d934db 4d83d7fca2 0e6a493bfa 20a3622bf3 : 500,000
37dad447f7 c22fbc55f8 1d7cac2cf6 a6ead1a217 35f6e23c76 : 750,000
5678796130 3311646283 9963464604 2209010610 5779458151 : 1,000,000
8653704276 8589418353 8706624969 4535897512 9763649216 : 1,200,000
7293649500 4049671124 7947151173 1960773799 1914462295 : 1,500,000
2907174473 5892565046 1663735632 3687106519 1457297909 : 2,000,000
0962872052 7420345883 0294305194 4240317833 1476913570 : 2,500,000
6667851395 4724032259 8065882978 5967469747 3349203390 : 4,000,000
4886585519 1846702365 4217617835 0518172132 0764619715 : 5,000,000
5377913223 9928659517 0653604450 1005321525 5014054157 : 7,500,000
bc89273abb ced2884ada a7f46c59b4 4c28e672c2 9ffd342362 : 1,000,000
0aba1a608d fe6741de2d a1547eb702 6696fc1fca fdbcf1c7f8 : 1,200,000
85426f68a5 8097eb6ebb 36c11df5f6 70fc730acd 8853271e67 : 1,500,000
6debf13cc5 2760f9ff7a 409dc3fe5b 5ed82b210b 8d84510702 : 2,000,000
d4f109e43b 6981fe4cae fda2ef9196 12eb1f4de8 b679f92b53 : 2,500,000
1e1d8dcaae 7c727e8be9 0902c012a7 72ba80be91 6027e79c89 : 4,000,000
794f77ee73 5983d871a0 89720ebbea 9db02184a8 2546cbf41b : 5,000,000
9b8e2cf109 351a0ee506 fda60be5ea b4d43389d0 8ebd73638d : 7,500,000
6532655319 4060999469 7873338106 3171948173 5348955897 : 10,000,000
8601538500 5804204781 4259627825 6213419453 8393719439 : 12,000,000
7964520526 3473393286 0749793239 3150314117 2775669803 : 15,000,000
9507244789 5232808191 1162910558 0138004933 8634527644 : 20,000,000
0786411592 4597806944 2455112852 2554677483 6191884322 : 25,000,000
1554947489 1739340818 7587103799 9039668830 1558150727 : 40,000,000
5130045796 0464561703 2424263071 4554183801 7945652654 : 50,000,000
3622218827 1876374415 8642291025 9143309437 5830289947 : 75,000,000
d54d9cfdd1 53adf017ee ead0fdaf40 7f653df38a c1a42e06a1 : 10,000,000
d6c0c9e440 7fd9a5f985 d89d0630cd b46246ece7 0de184fff1 : 12,000,000
633a054372 230e55e1b3 d1a4d3d4b8 e2eb6c4f46 c329a0feef : 15,000,000
bfe3338f69 96f585e251 ae04d0391d f967597199 b45aa8aeef : 20,000,000
6560c14554 67c9e2904d 4ca3674ba9 36e8b28f28 2ec8b9ab50 : 25,000,000
4815170ae6 37b67ddf89 19bf1f7a49 b55b80d764 b1356963f1 : 40,000,000
d672da992c 27699c79ec 3951a5bf16 3c922e97cb 76902a453c : 50,000,000
985c68e87a 6f333fdd0f 54493b973a 2fae030749 b7bf0598ae : 75,000,000
7572203175 2074898161 1683139375 1497058112 0187751592 : 100,000,000
5104759262 1298284894 1259405617 1838730897 4767965950 : 120,000,000
3128942413 9360224684 0575298095 6842990965 9910630131 : 150,000,000
7027277810 7370562338 9365687481 8320432202 2549381399 : 200,000,000
9958866734 1705167068 8515785208 0067520395 3452027780 : 250,000,000
1383889623 3104782220 2348416373 0678352848 9092823653 : 400,000,000
5002477883 0364214864 5906800532 7052368734 3293261427 : 500,000,000
9273220534 4584435023 3030974176 4989426914 9620136988 : 750,000,000
ac52a62fae a66611418d 1ddbd24b88 80bbdd60e4 9c3939abae : 100,000,000
aad69686a8 5ca79492fb 7b1318bb4a 9678cd6d93 280a273963 : 120,000,000
4bf25fe23f 3f93a0f5be fee6f7a42e 730b1c66fb b21db7b375 : 150,000,000
679c237408 b83f0393bc 1717349db1 aa5627e856 73458931f3 : 200,000,000
619d2e483a 0f00af6f6f 3c75f8dac3 5a44f746c6 c442d1de8d : 250,000,000
b75743a58d 65d61c2018 268997544f 91d42d6808 71764295ff : 400,000,000
9fa3f95c6f fe1659b599 ee51d430e3 04262b5af3 abca7c731a : 500,000,000
8851c3027f aa56edb654 3413cb475b b473818cac 8204cf85a1 : 750,000,000
7139868209 3196353628 2046127557 1517139511 5275045519 : 1,000,000,000
7291259308 1212086869 1293106223 2286344463 6299583604 : 1,200,000,000
2864537808 2135603814 8559147640 7275830638 1217050377 : 1,500,000,000
8643081314 7294569162 3040839037 5838922302 3009559510 : 2,000,000,000
9228502005 4677489552 2459688725 5242233502 7255998083 : 2,500,000,000
4165780256 6664407261 8181412099 9437534306 2268447216 : 4,000,000,000
0914971996 1298184401 9216126684 9425834935 5440797257 : 5,000,000,000
3385475953 1966806178 8883744753 1199654781 9032053672 : 7,500,000,000
bc5afd7356 636ae918be 7edac320b0 4aa82f160d 4a9a95faf8 : 1,000,000,000
e58ab46d58 67ecf74cf5 ce56f97ad1 f2e96e98f2 3f4a815aa0 : 1,200,000,000
74543d30dd 58e28d9b17 2f2b740113 b73ad383b0 2f2bd5bee4 : 1,500,000,000
a10aa6a0fa 18d702ea7c 3f6d4ac621 f9d54178e9 0648e92550 : 2,000,000,000
4af1c0aa99 3ffe8c4d2f 49cc3c2b47 5f687b14ca 81beb1b953 : 2,500,000,000
144210e642 4185590fee de55097c64 fcea3dc3cf c4aaeed8af : 4,000,000,000
565135110d af45ac735f 363791f110 59e8854838 2d9368cdb6 : 5,000,000,000
1f092f7fe3 97ee8fedcd daf844da6f 7130ac16af 621f9979ca : 7,500,000,000
9403994581 8580686529 2375008092 3106244131 4758821220 : 10,000,000,000
5484300705 7497256317 5638103668 9321501434 2024187144 : 12,000,000,000
9191266832 0053854336 4341441976 3841813584 8174204140 : 15,000,000,000
8939284339 1873129787 0114534056 4661882392 2515880594 : 20,000,000,000
1309759846 5364560010 7388984278 8403481193 9913806533 : 25,000,000,000
8533134381 5052690803 7005133742 2881696569 2467456441 : 40,000,000,000
6599559400 3447556105 3766739199 8513398712 7510930042 : 50,000,000,000
3016243947 6790359204 7625220944 1838085762 2737660479 : 75,000,000,000
0baeb3801c d8b48a016f f41852fea0 1aa89477e4 d7bcd81df9 : 10,000,000,000
8ad70eaff8 189fd859ad a319cf12ad 71517b11ab 437f99ff10 : 12,000,000,000
b77fad607e b447befe65 7e061f5761 3f8f63ab9b f9acd491f4 : 15,000,000,000
540c392c13 4b61e9ab70 e133e1c09f e1fd6f64b5 30f42a24f3 : 20,000,000,000
98e384eb8f 797a9d113c b8d4b2b3e4 e773f66b7c 59f12420e3 : 25,000,000,000
89222d7771 d3ce66cd6d 90fe2016e9 9b9578cf03 75d075644b : 40,000,000,000
0356cf02d9 2e24866c21 ec0dd43286 09f920dff9 855f0567cc : 50,000,000,000
d4c34fe748 02bed7120e b5c9b1bf03 056555fa02 b46d839a69 : 75,000,000,000
9536515199 6948432428 3185077669 0674614692 0191295669 : 100,000,000,000
6858531104 6492544158 8109961976 3804795509 4643565723 : 120,000,000,000
3532164560 4876410179 4411139356 4303770406 0267904917 : 150,000,000,000
4305017750 7056695457 1580141586 9082820114 5623831042 : 200,000,000,000
2663943310 3540041907 7074675913 3026287289 2295830629 : 250,000,000,000
4232472530 5584721833 6635696622 7418760375 3353406089 : 400,000,000,000
0505992340 4464069733 2573501014 7391768971 9054201320 : 500,000,000,000
3728959182 9959700411 0463747323 2418512577 4343912477 : 750,000,000,000
2329318eb4 e6271defb5 5bd1c7775f fe3dc62467 c3ad8fd53c : 100,000,000,000
39e56aaf5d 46c01152dd 5898efb16b 2f94f55e9d 515bde780f : 120,000,000,000
0b482df270 915ee6a188 dbe26a093b 834cead755 06d29761e5 : 150,000,000,000
078bf405c8 e945fa0914 b53f22ab16 8b09319559 e2437c7383 : 200,000,000,000
8b01c2f6e4 78dd508ae6 c210eb0099 ff41417733 db76923dd7 : 250,000,000,000
d311dc8058 23a6a76fef b16b43c436 6a6c6adf76 d607cf74fa : 400,000,000,000
6418af6732 0be600aee1 19ee6b568c 52b81b5efd f1a3f12ce9 : 500,000,000,000
6a68b3a57a 3fd5ea6ad8 ac0a871b74 b4c4b2f4a2 72a94e82a4 : 750,000,000,000
2976735807 0882130902 2460461146 5810642210 6680122702 : 1,000,000,000,000
5296320811 9703828272 7315356530 7867141740 4641807691 : 1,200,000,000,000
9649292043 0823196832 7127227140 6977745121 1028636395 : 1,500,000,000,000
8386341797 9368318191 5708299469 1313121384 3887908330 : 2,000,000,000,000
7023378492 4587524911 1838622539 0987058051 8718886518 : 2,500,000,000,000
3638467628 3610607856 5071920145 5255995193 8577295739 : 4,000,000,000,000
6399906735 0873400641 7497120374 4023826421 9484283852 : 5,000,000,000,000
7615115168 3088122145 2481816519 1247923135 4212689188 : 7,500,000,000,000
cddee9d16e b4a295e569 54e5e30b51 24a9ea02a9 3f89341cd5 : 1,000,000,000,000
839b18e149 0485f90aef 190ad5f0b5 6c05873c40 1f3b1f4b5f : 1,200,000,000,000
6627868e35 39c48d37a7 7d2554b047 c4cbac5fa4 711e987d27 : 1,500,000,000,000
2b02f66cc8 745e932507 9a1bf08451 77c330e6e1 d003f18425 : 2,000,000,000,000
8901790817 ddb3c12495 104f4cf645 07aa44343c 028af99290 : 2,500,000,000,000
c55d1ff718 62e174e866 6a65e040fc 326df99bfa 4993dac499 : 4,000,000,000,000
7cb68eeb8b 21eaf30b0c b5053ad304 aab4e328f0 f7c5a92eac : 5,000,000,000,000
211b00de43 def7f7b366 deb774f232 e01f75bcb5 f700300482 : 7,500,000,000,000
9804871001 5982157822 2070871138 6966940952 1989228675 : 10,000,000,000,000
4392476662 7656619000 2124460557 5531593458 4820611421 : 10,000,000,000,050
c742662109 951cced0b7 161db29b76 fb88597e6e d8a29a15c3 : 8,304,820,237,250
56d14de558

 

Digit Statistics:

The "Digit Hash" is a redundancy check used by y-cruncher. For a number x and the first N digits after the decimal place, the hash is defined as:

 

Download Digits:

The digits used to be available on Bittorrent. But since I quit school, I've no longer been able to seed them.

 

Shigeru Kondo has them for download on his website: http://piworld.calico.jp/estart.html

 

 

Back To:

 

Questions or Comments

Contact me via e-mail. I'm pretty good with responding unless it gets caught in my school's junk mail filter.