P.I.E.S. - Prime Internet Eisenstein Search - Page 10

Batalov · 2017-02-21, 18:14

Quote:

Originally Posted by paulunderwood

These/it could be over 5 million digits!

...not "could". These/it actually are.

paulunderwood · 2017-02-21, 19:05

Quote:

Originally Posted by Batalov

...not "could". These/it actually are.

You've actually found one or more and are in the process of proving it/them?

Batalov · 2017-02-21, 19:57

Yes. Still proving with the vanilla N-1 method though... and that takes quite some time even with parallel LLR.

Time for parallel-PFGW testing!

pepi37 · 2017-02-21, 22:13

Quote:

Originally Posted by Batalov

Yes. Still proving with the vanilla N-1 method though... and that takes quite some time even with parallel LLR.

Time for parallel-PFGW testing!

Is there end of your prime findings?

paulunderwood · 2017-02-23, 11:19

Quote:

Starting N-1 prime test of 123447^1048576-123447^524288+1
Using generic reduction FMA3 FFT length 1920K, Pass1=320, Pass2=6K, 16 threads, a = 7
123447^1048576-123447^524288+1 may be prime, trying to compute gcd's
7^((N-1)/41149)-1 is coprime to N!
7^((N-1)/3)-1 is coprime to N!
123447^1048576-123447^524288+1 is prime! (5338805 decimal digits) Time : 187808.030 sec.

5,338,805 decimal digits!

ET_ · 2017-02-23, 14:12

Quote:

Originally Posted by paulunderwood

5,338,805 decimal digits!

In just a little more than 2 days... Congratulations Paul!

paulunderwood · 2017-02-23, 15:01

Quote:

Originally Posted by ET_

In just a little more than 2 days... Congratulations Paul!

Luigi, it is Serge and Ryan et al you should be congratulating

ET_ · 2017-02-23, 16:27

Quote:

Originally Posted by paulunderwood

Luigi, it is Serge and Ryan et al you should be congratulating

Oh, I thought it was just another proven PRP... next time I will check the link before posting, sorry Serge and Ryan

paulunderwood · 2017-02-23, 21:26

Quote:

Originally Posted by Batalov

Time for parallel-PFGW testing!

Any joy there, Serge?

Batalov · 2017-02-23, 21:48

That was a hypothetical...

Someone else reported that it does work, didn't they?

paulunderwood · 2017-02-23, 21:53

Quote:

Originally Posted by Batalov

That was a hypothetical...

Someone else reported that it does work, didn't they?

Yeah, me. See: http://www.mersenneforum.org/showthr...599#post452599

One line with sed to alter it.

I would run it myself, on your new prime, but there is little point -- besides it would take more than ~3 days on my 4770k

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2017-02-21, 19:57	#102
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2×47×101 Posts	Yes. Still proving with the vanilla N-1 method though... and that takes quite some time even with parallel LLR. Time for parallel-PFGW testing!

2017-02-23, 21:48	#109
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2×47×101 Posts	That was a hypothetical... Someone else reported that it does work, didn't they?