Forum: Software
2022-02-21, 16:03
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Replies: 658
Views: 57,023
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Forum: Wagstaff PRP Search
2022-02-09, 22:26
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Replies: 10
Views: 12,016
t3(q)={s=4;for(i=2,q,s=(s^2-2)%(6*(2^q+1)/3));s=(s...
t3(q)={s=4;for(i=2,q,s=(s^2-2)%(6*(2^q+1)/3));s=(s-14)%(2^(q-2)-2);if(s==0,print1(q","))}
forprime(x=3,5000,t3(x))
5,7,11,13,17,19,23,31,43,61,79,101,127,167,191,199,313,347,701,1709,2617,3539,
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Forum: Wagstaff PRP Search
2022-02-09, 01:54
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Replies: 12
Views: 4,346
more simplifications (2)
t3(q)={w=(2^q+1)/3;s=4;for(i=2,q,s=(s^2-2)%(6*w));if(ispowerful(s+2),print1(q","))}
forprime(x=1,1000,t3(x))
3,5,7,11,13,17,19,23,31,43,61,79,101,127,167,191,199,313,347,701,
or
...
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Forum: Wagstaff PRP Search
2022-02-09, 01:28
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Replies: 12
Views: 4,346
more wagstaff simplifications
t3(q)={w=(2^q+1)/3;s=4;for(i=1,q,s=(s^2-2)%(6*w););if(s==14||s==194,print1(q","))}
forprime(x=1,100000,t3(x))
3,5,7,11,13,17,19,23,31,43,61,79,101,127,167,191,199,313,347,701,1709,2617,3539,
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Forum: Wagstaff PRP Search
2022-02-08, 16:08
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Replies: 12
Views: 4,346
what if?
t(q)={w=(2^q+1)/3;s=4;for(i=1,q-1,s=(s^2-2)%(w));s1=lift(Mod(s-5-9,w));s2=lift(Mod(s-5+9,w));if((s1==0)||(s2==0),print1(q","))}
forprime(x=3,5000,t(x))
...
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Forum: Wagstaff PRP Search
2022-02-08, 16:04
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Replies: 12
Views: 4,346
more fixes in wagstaff
t3(q)={w=(2^q+1)/3;s=4;for(i=1,q-1,s=(s^2-2)%(w));s1=lift(Mod(s-5-9,w));s2=lift(Mod(s-5+9,w));if((s1==0)||(s2==0),print1(q","))}
forprime(x=3,5000,t3(x))
...
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Forum: Wagstaff PRP Search
2022-02-08, 15:23
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Replies: 12
Views: 4,346
fix
For Mersenne:
t1(q)={w=(2^q-1);S0=4;S=S0;for(i=1,q-1,S=Mod(S^2-2,w));s1=lift(Mod(S-5-9,w));s2=lift(Mod(S-5+9,w));if(s2==2,print1(q","))}
forprime(x=3,5000,t1(x))
...
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Forum: Number Theory Discussion Group
2022-02-08, 14:43
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Replies: 2
Views: 727
also2
Numbers:
3,11,23,191,3539,10691,83339,4031399,13347311
can be generated by: isprime(2*p+1)&&(p%4==3)
And numbers:
5,89,9689,21701,859433,43112609
can be generated by: isprime(2*p+1)&&(p%4==1)
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Forum: Number Theory Discussion Group
2022-02-08, 14:13
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Replies: 2
Views: 727
also
Also:
If (2*p+1) | Mersenne(p) then: Wagstaff(p) might be a prime.
3,11,23,191,3539,10691,83339,4031399,13347311
and
If (2*p+1) | Wagstaff(p) then: Mersenne(p) might be a prime.
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Forum: Number Theory Discussion Group
2022-02-06, 19:22
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Replies: 2
Views: 727
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Forum: Marin's Mersenne-aries
2022-01-28, 16:02
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Replies: 41
Views: 4,384
hi
Hi Kriesel.
Can I help with double-checks?
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Forum: Hardware
2022-01-27, 21:37
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Replies: 136
Views: 23,707
6900XT (other benchmarks)
6900XT
2022-01-27 21:21:02 gpuowl v6.11-380-g79ea0cc
2022-01-27 21:21:04 gfx1030-0 OpenCL compilation in 2.55 s
2022-01-27 21:21:07 gfx1030-0 77936867 OK 800 0.00%; 613 us/it; ETA 0d...
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Forum: Hardware
2022-01-27, 21:16
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Replies: 136
Views: 23,707
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Forum: Hardware
2022-01-27, 18:50
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Replies: 136
Views: 23,707
6900XT
Hi all. I do also have a 6900XT.
Do you still need any benchmarks?
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Forum: Hardware
2022-01-14, 17:30
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Replies: 876
Views: 214,674
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Forum: Hardware
2022-01-14, 09:41
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Replies: 27
Views: 8,612
3990x
Posted some benchmarks on: Perpetual benchmark thread...
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Forum: Hardware
2022-01-14, 09:30
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Replies: 876
Views: 214,674
3990X (PBO disabled)
64 cores, 8 workers | win11 pro
AMD Ryzen Threadripper 3990X 64-Core Processor
CPU speed: 4217.15 MHz, 64 hyperthreaded cores
CPU features: 3DNow! Prefetch, SSE, SSE2, SSE4, AVX, AVX2, FMA
L1...
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Forum: Hardware
2022-01-13, 16:19
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Replies: 27
Views: 8,612
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Forum: Hardware
2022-01-13, 00:23
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Replies: 27
Views: 8,612
AMD 3990x + AMD RX 6900XT
Hi people.
Just made a new build today: 3990x + RX 6900XT
Still tuning the system and doing some experiments.
If you want I can run some tests and benchmarks.
Thanks,
Jorge Coveiro.
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Forum: Software
2021-10-07, 17:07
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Replies: 227
Views: 35,320
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Forum: Software
2021-10-07, 16:49
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Replies: 227
Views: 35,320
Build 3 solved partially my windows11pro...
Build 3 solved partially my windows11pro performance issues.
But it is still slower when I stop and restart Prime95.
If I do a fresh boot up of my machine it gives around 2,850ms/iter.
But if...
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Forum: Marin's Mersenne-aries
2021-09-29, 09:45
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Replies: 136
Views: 16,843
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Forum: JCoveiro
2020-02-05, 18:51
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Replies: 12
Views: 21,003
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Forum: Teams
2020-02-05, 15:45
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Replies: 2
Views: 12,573
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Forum: No Prime Left Behind
2020-02-05, 15:29
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Replies: 299
Views: 63,130
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