Forum: Math
2004-01-06, 13:36
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Replies: 12
Views: 8,382
10 days? lol and this with Prime95 or with a...
10 days? lol and this with Prime95 or with a program which you have written, cause I've heard that Prime95 was tens of times faster than programs written by most of the people here?
And about that...
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Forum: Math
2004-01-05, 13:08
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Replies: 12
Views: 8,382
Yes, but the Lucas-Lehmer test requires P - 2...
Yes, but the Lucas-Lehmer test requires P - 2 right? So to test if 2 ^ 20996011 - 1 is prime you have to test it with S(P - 2), right? (BTW how do you do the exponent thing, I mean when the exponent...
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Forum: Math
2004-01-04, 17:15
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Replies: 12
Views: 8,382
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Forum: Math
2004-01-04, 09:22
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Replies: 12
Views: 8,382
OK, that's what I ask. How do you prove that a...
OK, that's what I ask. How do you prove that a Mersenne number (in the form N = 2 ^ P - 1) is a prime? I mean you can't just do trial factoring up to sqrt(N) right? I guess that first you try trial...
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Forum: Math
2004-01-03, 16:04
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Replies: 12
Views: 8,382
How do you prove a number is prime?
Hi all,
I have a question.
How do you prove a number is a prime, but I mean a number with 6 000 000 digits (for example M40)? I read somewhere that if you knew the factors of N +/- 1 you could...
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