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 Showing results 1 to 25 of 48 Search took 0.01 seconds. Search: Posts Made By: JCoveiro
 Forum: Software 2022-02-21, 16:03 Replies: 613 Views: 49,851 Posted By JCoveiro Hi. Yep, I can volunteer. 3990X + 6900XT Hi. Yep, I can volunteer. 3990X + 6900XT
 Forum: Wagstaff PRP Search 2022-02-09, 22:26 Replies: 10 Views: 10,973 Posted By JCoveiro 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,
 Forum: Wagstaff PRP Search 2022-02-09, 01:54 Replies: 12 Views: 3,856 Posted By JCoveiro 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 ...
 Forum: Wagstaff PRP Search 2022-02-09, 01:28 Replies: 12 Views: 3,856 Posted By JCoveiro 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,
 Forum: Wagstaff PRP Search 2022-02-08, 16:08 Replies: 12 Views: 3,856 Posted By JCoveiro 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)) ...
 Forum: Wagstaff PRP Search 2022-02-08, 16:04 Replies: 12 Views: 3,856 Posted By JCoveiro 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)) ...
 Forum: Wagstaff PRP Search 2022-02-08, 15:23 Replies: 12 Views: 3,856 Posted By JCoveiro 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)) ...
 2022-02-08, 14:43 Replies: 2 Views: 656 Posted By JCoveiro 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)
 2022-02-08, 14:13 Replies: 2 Views: 656 Posted By JCoveiro 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.
 2022-02-06, 19:22 Replies: 2 Views: 656 Posted By JCoveiro Sophie Germain Primes, Mersenne numbers and Wagstaff numbers Connection Hi all. I think I've found a "Sophie Germain Primes" connection with Mersenne numbers and Wagstaff numbers. k=1;forprime(x=1,1000,if(isprime(2*x+1),print1("SophieGermain("k")*2+1 = ("x"*2+1) =...
 Forum: Marin's Mersenne-aries 2022-01-28, 16:02 Replies: 40 Views: 3,841 Posted By JCoveiro hi Hi Kriesel. Can I help with double-checks?
 Forum: Hardware 2022-01-27, 21:37 Replies: 136 Views: 22,939 Posted By JCoveiro 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...
 Forum: Hardware 2022-01-27, 21:16 Replies: 136 Views: 22,939 Posted By JCoveiro 6900XT (Benchmarks) Hi again. I'm sending the 6900XT Benchmarks (from your file).
 Forum: Hardware 2022-01-27, 18:50 Replies: 136 Views: 22,939 Posted By JCoveiro 6900XT Hi all. I do also have a 6900XT. Do you still need any benchmarks?
 Forum: Hardware 2022-01-14, 17:30 Replies: 875 Views: 211,231 Posted By JCoveiro 3990x (PBO disabled) + 128GB@3200MHz RAM My RAM speed is 3200MHz
 Forum: Hardware 2022-01-14, 09:41 Replies: 27 Views: 8,144 Posted By JCoveiro 3990x Posted some benchmarks on: Perpetual benchmark thread...
 Forum: Hardware 2022-01-14, 09:30 Replies: 875 Views: 211,231 Posted By JCoveiro 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...
 Forum: Hardware 2022-01-13, 16:19 Replies: 27 Views: 8,144 Posted By JCoveiro True. I've been testing and 8 workers gives... True. I've been testing and 8 workers gives the best timings. Also in Linux seems faster. Currently I'm using Win11 Pro.
 Forum: Hardware 2022-01-13, 00:23 Replies: 27 Views: 8,144 Posted By JCoveiro 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.
 Forum: Software 2021-10-07, 17:07 Replies: 227 Sticky: Prime95 30.7 Views: 32,972 Posted By JCoveiro [UPDATE]: Performance bad again on a restart,... [UPDATE]: Performance bad again on a restart, around 5,750ms/iter
 Forum: Software 2021-10-07, 16:49 Replies: 227 Sticky: Prime95 30.7 Views: 32,972 Posted By JCoveiro 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...
 Forum: Marin's Mersenne-aries 2021-09-29, 09:45 Replies: 136 Views: 15,982 Posted By JCoveiro Hi people. Which exponents are left to... Hi people. Which exponents are left to verify M48? I can help in double-checking.
 Forum: JCoveiro 2020-02-05, 18:51 Replies: 12 Views: 20,638 Posted By JCoveiro :chalsall::tu: :chalsall::tu:
 Forum: Teams 2020-02-05, 15:45 Replies: 2 Views: 12,439 Posted By JCoveiro Any active Team? Is there any 'active' Team? I would like to join one.
 Forum: No Prime Left Behind 2020-02-05, 15:29 Replies: 299 Views: 62,316 Posted By JCoveiro Hi AMDave! These "teams" are for researching... Hi AMDave! These "teams" are for researching only Mersenne Primes? Or also other kinds of primes?!
 Showing results 1 to 25 of 48

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