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Forum: Factoring 2010-05-25, 12:23
Replies: 19
Views: 5,280
Posted By aaa120
I know that msieve can factor it ,but my computer...

I know that msieve can factor it ,but my computer is too poor to factor it
Forum: Factoring 2010-05-25, 12:12
Replies: 19
Views: 5,280
Posted By aaa120
who can factor this 128 digits number?

my friend let me to factor it ,but it is difficult for me to factor it,
who can help me to factor it ?...
Forum: Factoring 2008-12-06, 10:04
Replies: 14
Views: 3,088
Posted By aaa120
how do you know ?

Mathematica is not an open source software,How do you
know "Mathematica ECMs (or TFs) just a little bit higher"?
Are you the employee of Wolfram Research?
Forum: Factoring 2008-12-06, 08:47
Replies: 14
Views: 3,088
Posted By aaa120
mathematica7.0 can easily factorize 10^67+1111

input :Timing[FactorInteger[10^67 + 1111]]
output :{4.703, {{2225021, 1}, {1857766060519267,
1}, {2419217198278205425660754412115585800799721473, 1}}}

I also used msieve 1.39 to factorize...
Forum: Msieve 2008-11-27, 07:49
Replies: 7
Views: 2,231
Posted By aaa120
Getting msieve to work

I don't know why msieve1.39 cannot run on my machine .
My operating system is windows XP.
I download msieve 1.38 from this (http://www.tuts4you.com/download.php?view.1252),
msieve 1.38 can run on...
Forum: Factoring 2008-11-21, 10:36
Replies: 5
Views: 2,705
Posted By aaa120
The source simply calls another function...

The source simply calls another function depending on the second parameter:

long
ispseudoprime(GEN x, long flag)
{
if (flag == 0) return BSW_psp(x);
return millerrabin(x, flag);
}[/quote]...
Forum: Factoring 2008-11-21, 10:27
Replies: 5
Views: 2,705
Posted By aaa120
I cannot understand

My native language is not English ,I cannot understand your words
very well.
Forum: Factoring 2008-11-18, 12:09
Replies: 5
Views: 2,705
Posted By aaa120
algorithms about primality in pari/gp

I want to know several algorithms about primality in pari/gp.
the function name is “ispseudoprime”。
who can describe the algorithms which are used in ispseudoprime?
the more detailed the better!...
Forum: Factoring 2008-10-31, 02:19
Replies: 9
Views: 1,580
Posted By aaa120
Unhappy The integer here is referred to the integer...

The integer here is referred to the integer which is great than 0!
Forum: GMP-ECM 2008-10-30, 08:35
Replies: 2
Views: 2,692
Posted By aaa120
where can I download the latest version of GMP-ECM

where can I download the latest version of GMP-ECM?
note:my operating system is windows,I know nothing
about linux
Forum: Factoring 2008-10-30, 08:32
Replies: 9
Views: 1,580
Posted By aaa120
what kind of integer is the hardest to be factored

what kind of integer is the hardest to be factored at present?
I want to know,who can tell me ?
Forum: Software 2008-10-26, 11:09
Replies: 7
Views: 7,314
Posted By aaa120
Thanks

Thanks ,you're right!I don't know why I cannot visit
the website in my country !Good luck!
Forum: Software 2008-10-25, 08:34
Replies: 7
Views: 7,314
Posted By aaa120
Where can I download the latest version of primo?

In my country ,it is impossible for me to visit the website of
primo(www.ellipsa.net) Is there anybody who can give me
an effective download link ?
Forum: Miscellaneous Math 2008-10-23, 13:26
Replies: 4
Views: 2,363
Posted By aaa120
Question Who can give me a proof ?

Let n is an integer which is great then 3,
b=2^(n-1)+1 ,
Is there anybody who can prove that n
can't be the factor of b?

I verified that there is no counterexample
for n below 300000000.
...
Forum: Factoring 2008-10-22, 06:57
Replies: 17
Views: 3,379
Posted By aaa120
Thumbs up extremely incredible!

I found 37*prp47*prp52=10^100+27 by using Mathematica 6.0.
How did you get the other two factors of 10^100+27?
I think pari/gp maybe the most powerful software in number
theory.Pari/gp have run ...
Forum: Factoring 2008-10-22, 00:36
Replies: 17
Views: 3,379
Posted By aaa120
Smile who can factor 10^100+27?

I take great interest in factorization.
It is difficult for me to fact 10^100+27,I
have spent about 15 hours to fact it by
using pari/gp which is an especial famous software
in number theory...
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