who knows Ryan Propper?

[ryanp]

Originally Posted by bbb120

I have one personal computer ,Windows 7 operating system ,but works slowly , so
I want to know what kind of hardware helps Ryan Propper to get that 83digits factor

I honestly don't even remember at this point what type of machine found that factor. Even if I did, that hardware has almost certainly been obsoleted by modern stuff. These days, Skylake/Cascadelake machines with either GMP-ECM (linked with GWNUM library) or AVX-ECM are pretty efficient for testing b^n +/- 1 numbers.

[ATH]

Originally Posted by Xyzzy

https://www.servethehome.com/aws-ec2...ultraclusters/

p4d.24xlarge @ $32.77/hour

There is actually a spot price for them it seems, currently at $9.8318 / hour in us-east-1 (N. Virginia) and us-west-2 (Oregon).

[bbb120]

Originally Posted by ryanp

I honestly don't even remember at this point what type of machine found that factor. Even if I did, that hardware has almost certainly been obsoleted by modern stuff. These days, Skylake/Cascadelake machines with either GMP-ECM (linked with GWNUM library) or AVX-ECM are pretty efficient for testing b^n +/- 1 numbers.

are you Ryan Propper？？？

[Batalov]

Originally Posted by bbb120

are you Ryan Propper？？？

or Ryan's dog? Who knows!

[xilman]

Originally Posted by bbb120

are you Ryan Propper？？？

No, I am Ryan Propper, and so is my wife.

[ryanp]

Originally Posted by Batalov

or Ryan's dog? Who knows!

The cat does walk on the keyboard from time to time, but it's unclear if she's found any factors...

[bsquared]

Originally Posted by ryanp

I honestly don't even remember at this point what type of machine found that factor. Even if I did, that hardware has almost certainly been obsoleted by modern stuff. These days, Skylake/Cascadelake machines with either GMP-ECM (linked with GWNUM library) or AVX-ECM are pretty efficient for testing b^n +/- 1 numbers.

Sparing me the build process to figure it out for myself, does GWNUM provide a speedup even for "small" inputs like 2^1277-1? How about 2^941-1? Wondering where the cutoff is to normal mulmod methods.

(Small, of course, relative to where prime95 usually operates.)

[ixfd64]

Originally Posted by bbb120

I want to know his hardware ,
not I want his hardware !
sorry ,my native is not English

He mentioned several years ago that he has access to Stanford University's FarmShare cluster: https://mersenneforum.org/showpost.p...2&postcount=11

[Uncwilly]

Originally Posted by ixfd64

He mentioned several years ago that he has access to Stanford University's FarmShare cluster: https://mersenneforum.org/showpost.p...2&postcount=11

Ryan can be a female name too. Unless you have specific knowledge....

[xilman]

Originally Posted by Uncwilly

Ryan can be a female name too. Unless you have specific knowledge....

These days all names can be female, male, or pretty much anything else.

Today I am identifying as a sofa. Tomorrow, who knows?

[ryanp]

This thread is.. strange.