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Message boards : General discussion : Pi calculated to '62.8 trillion digits

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Message 151248 - Posted: 23 Aug 2021 | 14:17:19 UTC

Pi calculated to '62.8 trillion digits'
with a pair of 32-core AMD Epyc chips,
1TB RAM, 510TB disk space

Swiss uni challenges world record after 108 days and 9 hours of divisive effort


____________

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Discovered 8 mega primesFound 5 primes in the 2020 Tour de PrimesFound 2 mega primes in the 2020 Tour de PrimesFound 4 primes in the 2021 Tour de PrimesFound 2 mega primes in the 2021 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,020,701)Cullen LLR Sapphire: Earned 20,000,000 credits (20,174,451)ESP LLR Sapphire: Earned 20,000,000 credits (23,496,803)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (44,153,498)PPS LLR Emerald: Earned 50,000,000 credits (61,332,778)PSP LLR Emerald: Earned 50,000,000 credits (51,069,305)SoB LLR Emerald: Earned 50,000,000 credits (51,885,310)SR5 LLR Sapphire: Earned 20,000,000 credits (20,183,763)SGS LLR Sapphire: Earned 20,000,000 credits (20,482,069)TRP LLR Sapphire: Earned 20,000,000 credits (20,307,419)Woodall LLR Sapphire: Earned 20,000,000 credits (22,371,625)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,380,527)Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (744,531)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,007,004)PPS Sieve Double Gold: Earned 500,000,000 credits (578,571,690)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,181)AP 26/27 Sapphire: Earned 20,000,000 credits (31,159,401)GFN Double Silver: Earned 200,000,000 credits (484,895,381)WW Double Amethyst: Earned 1,000,000,000 credits (1,909,416,000)
Message 151249 - Posted: 23 Aug 2021 | 14:48:12 UTC

At some point I learnt pi as 3.1415926535897 (I have had a couple of wines and I am not going to check this)

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Message 151252 - Posted: 23 Aug 2021 | 19:15:43 UTC - in response to Message 151248.

Does anyone know what the highest precision actually used in any application on Earth might be? For my uses, 3.1415926 is as close as I use, and that's probably way beyond what's really needed.

I do understand that the 62.8 trillion digits was done for bragging rights. To show that they could, basically.

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Discovered 8 mega primesFound 5 primes in the 2020 Tour de PrimesFound 2 mega primes in the 2020 Tour de PrimesFound 4 primes in the 2021 Tour de PrimesFound 2 mega primes in the 2021 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,020,701)Cullen LLR Sapphire: Earned 20,000,000 credits (20,174,451)ESP LLR Sapphire: Earned 20,000,000 credits (23,496,803)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (44,153,498)PPS LLR Emerald: Earned 50,000,000 credits (61,332,778)PSP LLR Emerald: Earned 50,000,000 credits (51,069,305)SoB LLR Emerald: Earned 50,000,000 credits (51,885,310)SR5 LLR Sapphire: Earned 20,000,000 credits (20,183,763)SGS LLR Sapphire: Earned 20,000,000 credits (20,482,069)TRP LLR Sapphire: Earned 20,000,000 credits (20,307,419)Woodall LLR Sapphire: Earned 20,000,000 credits (22,371,625)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,380,527)Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (744,531)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,007,004)PPS Sieve Double Gold: Earned 500,000,000 credits (578,571,690)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,181)AP 26/27 Sapphire: Earned 20,000,000 credits (31,159,401)GFN Double Silver: Earned 200,000,000 credits (484,895,381)WW Double Amethyst: Earned 1,000,000,000 credits (1,909,416,000)
Message 151255 - Posted: 23 Aug 2021 | 20:10:41 UTC - in response to Message 151252.

Does anyone know what the highest precision actually used in any application on Earth might be? For my uses, 3.1415926 is as close as I use, and that's probably way beyond what's really needed.

I do understand that the 62.8 trillion digits was done for bragging rights. To show that they could, basically.

I also vaguely remember that about 10 digits of pi is fairly accurate - within a couple of centimetres of calculating the circumference of the universe.

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Message 151258 - Posted: 24 Aug 2021 | 2:24:03 UTC - in response to Message 151255.

Does anyone know what the highest precision actually used in any application on Earth might be? For my uses, 3.1415926 is as close as I use, and that's probably way beyond what's really needed.

I do understand that the 62.8 trillion digits was done for bragging rights. To show that they could, basically.

I also vaguely remember that about 10 digits of pi is fairly accurate - within a couple of centimetres of calculating the circumference of the universe.


39 is enough to compute it to the width of an atom.

Which, considering that spacetime is not uniformly Euclidean, is not exactly a useful or reliable calculation if you need that kind of precision and could provide a measurement of radius that is remotely as precise. (Now I'm having flashbacks to HS science and significant figures)
____________
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Message 151259 - Posted: 24 Aug 2021 | 3:06:09 UTC - in response to Message 151249.

At some point I learnt pi as 3.1415926535897 (I have had a couple of wines and I am not going to check this)

I did check this after posting - it was correct. It is kind of like peaking into the box with the cat without collapsing the wavefunction.

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Discovered 8 mega primesFound 5 primes in the 2020 Tour de PrimesFound 2 mega primes in the 2020 Tour de PrimesFound 4 primes in the 2021 Tour de PrimesFound 2 mega primes in the 2021 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,020,701)Cullen LLR Sapphire: Earned 20,000,000 credits (20,174,451)ESP LLR Sapphire: Earned 20,000,000 credits (23,496,803)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (44,153,498)PPS LLR Emerald: Earned 50,000,000 credits (61,332,778)PSP LLR Emerald: Earned 50,000,000 credits (51,069,305)SoB LLR Emerald: Earned 50,000,000 credits (51,885,310)SR5 LLR Sapphire: Earned 20,000,000 credits (20,183,763)SGS LLR Sapphire: Earned 20,000,000 credits (20,482,069)TRP LLR Sapphire: Earned 20,000,000 credits (20,307,419)Woodall LLR Sapphire: Earned 20,000,000 credits (22,371,625)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,380,527)Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (744,531)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,007,004)PPS Sieve Double Gold: Earned 500,000,000 credits (578,571,690)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,181)AP 26/27 Sapphire: Earned 20,000,000 credits (31,159,401)GFN Double Silver: Earned 200,000,000 credits (484,895,381)WW Double Amethyst: Earned 1,000,000,000 credits (1,909,416,000)
Message 151260 - Posted: 24 Aug 2021 | 3:11:06 UTC - in response to Message 151258.
Last modified: 24 Aug 2021 | 3:11:24 UTC

Does anyone know what the highest precision actually used in any application on Earth might be? For my uses, 3.1415926 is as close as I use, and that's probably way beyond what's really needed.

I do understand that the 62.8 trillion digits was done for bragging rights. To show that they could, basically.

I also vaguely remember that about 10 digits of pi is fairly accurate - within a couple of centimetres of calculating the circumference of the universe.


39 is enough to compute it to the width of an atom.

Which, considering that spacetime is not uniformly Euclidean, is not exactly a useful or reliable calculation if you need that kind of precision and could provide a measurement of radius that is remotely as precise. (Now I'm having flashbacks to HS science and significant figures)

For me, studying (or more precisely not studying) physics at university was about discovering the most neat and finished part of physics - classical mechanics with Lagrangians and Hamiltonians. The opposite of quantum where care needs to be taken in studying it for risk of changing what is being learnt. I didn't take the risk :)

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Discovered 8 mega primesFound 5 primes in the 2020 Tour de PrimesFound 2 mega primes in the 2020 Tour de PrimesFound 4 primes in the 2021 Tour de PrimesFound 2 mega primes in the 2021 Tour de Primes321 LLR Sapphire: Earned 20,000,000 credits (20,020,701)Cullen LLR Sapphire: Earned 20,000,000 credits (20,174,451)ESP LLR Sapphire: Earned 20,000,000 credits (23,496,803)Generalized Cullen/Woodall LLR Sapphire: Earned 20,000,000 credits (44,153,498)PPS LLR Emerald: Earned 50,000,000 credits (61,332,778)PSP LLR Emerald: Earned 50,000,000 credits (51,069,305)SoB LLR Emerald: Earned 50,000,000 credits (51,885,310)SR5 LLR Sapphire: Earned 20,000,000 credits (20,183,763)SGS LLR Sapphire: Earned 20,000,000 credits (20,482,069)TRP LLR Sapphire: Earned 20,000,000 credits (20,307,419)Woodall LLR Sapphire: Earned 20,000,000 credits (22,371,625)321 Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,380,527)Cullen/Woodall Sieve (suspended) Gold: Earned 500,000 credits (744,531)Generalized Cullen/Woodall Sieve (suspended) Turquoise: Earned 5,000,000 credits (5,007,004)PPS Sieve Double Gold: Earned 500,000,000 credits (578,571,690)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,181)AP 26/27 Sapphire: Earned 20,000,000 credits (31,159,401)GFN Double Silver: Earned 200,000,000 credits (484,895,381)WW Double Amethyst: Earned 1,000,000,000 credits (1,909,416,000)
Message 151263 - Posted: 24 Aug 2021 | 7:00:30 UTC - in response to Message 151259.
Last modified: 24 Aug 2021 | 7:04:58 UTC

At some point I learnt pi as 3.1415926535897 (I have had a couple of wines and I am not going to check this)

I did check this after posting - it was correct. It is kind of like peaking into the box with the cat without collapsing the wavefunction.

I think I meant peeking.
Just staying ahead of quantum - or behind.
Keeping my distance from how much I weigh when I know my electricity bill.
Or what time it is if I remember I have left my phone in the other room.

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Message boards : General discussion : Pi calculated to '62.8 trillion digits

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