A treatise on the advantages of factoring over PRPing/LLing

ZFR · 2020-12-15, 13:43

If you look for Mersenne primes, you should be prepared to find nothing, and nothing, and nothing. But after I've started TFing on my GPU this year, it's been like a little Christmas every 3 weeks or so^*.

^*Your mileage may vary. Always read the label.

retina · 2020-12-15, 13:48

That's great. Until all the easy factors are found. Then it is back to having Christmas only once per year.

M344587487 · 2020-12-15, 14:10

I get similar satisfaction from DC. An exponent gets squared away every few days.

kriesel · 2020-12-15, 14:37

The last 25 years has been more fruitful for Mersenne prime finding, than any other similar length time span in history. There have been centuries with no finds. https://www.mersenne.org/primes/

Runtime Error · 2020-12-15, 17:49

+1

Similarly, P-1 is super rewarding, and additionally it has the lottery aspect of finding massive factors!

ZFR · 2020-12-15, 18:10

Quote:

Originally Posted by Runtime Error

Similarly, P-1 is super rewarding, and additionally it has the lottery aspect of finding massive factors!

Oh yeah. Starting this week I dedicated a worker for P-1. There is a Top 100 factor hidden out there and I have a... um... er... the-prime95-equivalent-of-a-bullet with its name on it.

VBCurtis · 2020-12-15, 20:58

Quote:

Originally Posted by kriesel

The last 25 years has been more fruitful for Mersenne prime finding, than any other similar length time span in history. There have been centuries with no finds. https://www.mersenne.org/primes/

Who knew computers were so helpful with, er, computation?

ZFR · 2020-12-25, 15:58

Quote:

Originally Posted by ZFR

If you look for Mersenne primes, you should be prepared to find nothing, and nothing, and nothing. But after I've started TFing on my GPU this year, it's been like a little Christmas every 3 weeks or so^*.

^*Your mileage may vary. Always read the label.

Ta da.

Code:

UID: ZFR/Daria, M103461923 has a factor: 35104615462903630715167 [TF:74:75:mfaktc 0.21 barrett76_mul32_gs]

It's a little Christmas, on Christmas.

lisanderke · 2021-01-08, 16:36

I've been doing a lot of 72,74 factoring on The big^tm numbers and I have to say, it's very satisfying to see a factor pop up every 20 or so minutes!

2020-12-15, 13:43	#1
ZFR Feb 2008 Bray, Ireland 139 Posts	A treatise on the advantages of factoring over PRPing/LLing If you look for Mersenne primes, you should be prepared to find nothing, and nothing, and nothing. But after I've started TFing on my GPU this year, it's been like a little Christmas every 3 weeks or so^. ^Your mileage may vary. Always read the label. Last fiddled with by ZFR on 2020-12-15 at 13:43

2020-12-15, 17:49	#5
Runtime Error Sep 2017 USA E3₁₆ Posts	+1 Similarly, P-1 is super rewarding, and additionally it has the lottery aspect of finding massive factors! Last fiddled with by Runtime Error on 2020-12-15 at 17:51

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2020-12-15, 13:48	#2
retina Undefined "The unspeakable one" Jun 2006 My evil lair 1011110111011₂ Posts	That's great. Until all the easy factors are found. Then it is back to having Christmas only once per year.

2020-12-15, 14:10	#3
M344587487 "Composite as Heck" Oct 2017 761 Posts	I get similar satisfaction from DC. An exponent gets squared away every few days.

2020-12-15, 14:37	#4
kriesel "TF79LL86GIMPS96gpu17" Mar 2017 US midwest 13²×29 Posts	The last 25 years has been more fruitful for Mersenne prime finding, than any other similar length time span in history. There have been centuries with no finds. https://www.mersenne.org/primes/

2021-01-08, 16:36	#9
lisanderke Oct 2020 Belgium 7 Posts	I've been doing a lot of 72,74 factoring on The big^tm numbers and I have to say, it's very satisfying to see a factor pop up every 20 or so minutes!