mersenneforum.org  

Go Back   mersenneforum.org > Search Forums

Showing results 1 to 25 of 30
Search took 0.01 seconds.
Search: Posts Made By: bbb120
Forum: PrimeNet 2020-09-02, 08:16
Replies: 28
Views: 2,161
Posted By bbb120
Is their computer hardware particularly good?

Is their computer hardware particularly good?
Forum: Factoring 2019-03-12, 04:02
Replies: 103
Views: 16,590
Posted By bbb120
FindGroupOrder := function (p, sigma) K :=...

FindGroupOrder := function (p, sigma)
K := GF(p);
v := K ! (4*sigma);
u := K ! (sigma^2-5);
x := u^3;
b := 4*x*v;
a := (v-u)^3*(3*u+v);
A := a/b-2;
x := x/v^3;
b...
Forum: Twin Prime Search 2019-03-09, 06:14
Replies: 8
Views: 2,519
Posted By bbb120
please tell me the least twin primes which great...

please tell me the least twin primes which great than 10^1000
Forum: Miscellaneous Math 2019-03-08, 08:08
Replies: 4
Views: 1,080
Posted By bbb120
Do[If[Mod[PowerMod[3, n - 1, n] + 1, n] == 0, ...

Do[If[Mod[PowerMod[3, n - 1, n] + 1, n] == 0,
Print[{n, FactorInteger[n]}]], {n, 3, 10^6}]
my proof is not correct,because
3^(28-1)+1=272342767321*28 is multiple of 28
i do not know why
Forum: Miscellaneous Math 2019-03-08, 07:45
Replies: 4
Views: 1,080
Posted By bbb120
if 2^(n-1)=-1(mod n),then 2^(2n-2)=1(mod n) ...

if 2^(n-1)=-1(mod n),then
2^(2n-2)=1(mod n)
this told me that ordn(2)=2n-2>n
2^eulerphi(n)=1(mod n)
this told me that ordn(2)<eulerphi(n)<n,
contradict!
Forum: GMP-ECM 2019-03-08, 02:17
Replies: 4
Views: 1,633
Posted By bbb120
https://members.loria.fr/PZimmermann/records/top10...

https://members.loria.fr/PZimmermann/records/top10-2018.html
FindGroupOrder := function (p, sigma)
K := GF(p);
v := K ! (4*sigma);
u := K ! (sigma^2-5);
x := u^3;
b := 4*x*v;
...
Forum: GMP-ECM 2019-03-08, 02:12
Replies: 4
Views: 1,633
Posted By bbb120
FindGroupOrder := function (p, sigma) K :=...

FindGroupOrder := function (p, sigma)
K := GF(p);
v := K ! (4*sigma);
u := K ! (sigma^2-5);
x := u^3;
b := 4*x*v;
a := (v-u)^3*(3*u+v);
A := a/b-2;
x := x/v^3;
b...
Forum: Software 2019-03-04, 03:55
Replies: 19
Views: 1,487
Posted By bbb120
Very Good! Great! you let me found I am...

Very Good!
Great!
you let me found I am ignorant!
you are really very very clever!

but what is Jacobi error check?
I only know jacobi symbol in number theory !
Forum: Software 2019-03-02, 04:03
Replies: 19
Views: 1,487
Posted By bbb120
Is this algorithm much better and faster than...

Is this algorithm much better and faster than lucas-lehmer algorithm ?

Testing Mersenne Primes with Elliptic Curves
https://link.springer.com/chapter/10.1007/11870814_27
Forum: Software 2019-03-02, 01:00
Replies: 19
Views: 1,487
Posted By bbb120
but different FFT can diff much? the large...

but different FFT can diff much?
the large Mp,the much faster prime95 than mathematica!
Forum: Software 2019-03-02, 00:27
Replies: 19
Views: 1,487
Posted By bbb120
why is prime95 much faster than mathematica?

I test M86243=2^86243-1 with prime95 and mathematica ,
by using the same algorithm -lucas lehmer algorithm ,
but prime95 is much much much fast than mathematica 11.3!
prime 95 takes no more than 2...
Forum: GMP-ECM 2019-03-01, 01:50
Replies: 9
Views: 2,106
Posted By bbb120
I factor number using mathematica previously, ...

I factor number using mathematica previously,
but it is a little slow,so I want to
use some software which can fast quickly than mathematica!
Forum: Forum Feedback 2019-03-01, 01:43
Replies: 5
Views: 847
Posted By bbb120
but you know that "I am not a spammers!"

but you know that "I am not a spammers!"
Forum: Five or Bust - The Dual Sierpinski Problem 2019-03-01, 01:29
Replies: 388
Views: 238,591
Posted By bbb120
https://en.wikipedia.org/wiki/Baillie%E2%80%93PSW_...

https://en.wikipedia.org/wiki/Baillie%E2%80%93PSW_primality_test
https://en.wikipedia.org/wiki/Lucas_pseudoprime#Strong_Lucas_pseudoprimes

you can read this for lucas test!
Forum: GMP-ECM 2019-03-01, 01:24
Replies: 9
Views: 2,106
Posted By bbb120
I think he can make prime95 factor any type of...

I think he can make prime95 factor any type of integer ,not only
k*b^n+c,I just give him some suggestion!
I hope I can factor any integer by prime95 one day !
Forum: Forum Feedback 2019-03-01, 01:19
Replies: 5
Views: 847
Posted By bbb120
which link? Please do not move my POST

which link?
Please do not move my POST
Forum: Five or Bust - The Dual Sierpinski Problem 2019-03-01, 00:46
Replies: 388
Views: 238,591
Posted By bbb120
miller rabin really does not give any certificate...

miller rabin really does not give any certificate a prime ,
but several miller rabin test with one lucas test is very fast and very very Reliable!
Forum: Forum Feedback 2019-03-01, 00:37
Replies: 5
Views: 847
Posted By bbb120
who moved my post?

please do not move my POST !
I do not know who and why moved my POST!
I do not necroposting(灌水)on this forum
(no one will take interest in necroposting on this forum from China ! ) ,
I only...
Forum: GMP-ECM 2019-03-01, 00:21
Replies: 9
Views: 2,106
Posted By bbb120
but I can not use GMP-ECM on windows 7? I know...

but I can not use GMP-ECM on windows 7?
I know nothing about linux or unix
Forum: GMP-ECM 2019-02-28, 07:57
Replies: 9
Views: 2,106
Posted By bbb120
how can I use GMP-ECM on Windows 7?

I take great interest in factorization ,
but I am unable to use Linux or Unix ,
is there anybody who can use GMP-ECM on Windows 7?
prime95 only can ECM number like k*b^n+c
Forum: Software 2019-02-28, 07:41
Replies: 602
Views: 79,804
Posted By bbb120
prime95 can only ECM number which like k*b^n+c, ...

prime95 can only ECM number which like k*b^n+c,
but I want to use it to factor any integer!
how can I do this?
Forum: Miscellaneous Math 2019-02-28, 07:21
Replies: 22
Views: 943
Posted By bbb120
28871482380507712126714295971303939919776094592797...

2887148238050771212671429597130393991977609459279722700926516024197432\
3037991527331163289831446392259419778031109293496555784189494417409338\...
Forum: Miscellaneous Math 2019-02-28, 07:05
Replies: 22
Views: 943
Posted By bbb120
You can use mathematica ,function...

You can use mathematica ,function PrimeQ[2^73360+10711]

MillerRabin[n0_,a0_]:=Module[{n=n0,a=a0,s,m,t1,k},
s=0;m=n-1;While[Mod[m,2]==0,m=m/2;s=s+1];
t1=PowerMod[a,m,n];
...
Forum: GMP-ECM 2019-02-27, 01:07
Replies: 4
Views: 1,633
Posted By bbb120
https://members.loria.fr/PZimmermann/records/ecm/g...

https://members.loria.fr/PZimmermann/records/ecm/go.magma
I found it,
but why do no use A and B instead of sigma (where y^2=x^3+A*x+B)?
Is sigma much more useful than A and B?
Forum: Miscellaneous Math 2019-02-26, 04:44
Replies: 22
Views: 943
Posted By bbb120
Great! Good Job!

Great!
Good Job!
Showing results 1 to 25 of 30

 
All times are UTC. The time now is 12:43.

Sat Sep 26 12:43:05 UTC 2020 up 16 days, 9:54, 1 user, load averages: 1.63, 1.65, 1.64

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.