twin prime generator - Page 2

1260 · 2003-08-10, 11:46

Yes you're right. Thanks.

I guess, this search for B is time consuming, as I estimate B to have about 5000 digits, and there isnt a sieving program that allows expressions. :(

ixfd64 · 2003-09-19, 20:31

You might be able to make one using an "eval()" function (many languages have it).

Also, if p and p+2 are twin primes, then p+1 is always a multiple of 6! :) (Except for the case of 3 and 5.)

1260 · 2003-10-12, 09:48

the eval() might work for small numbers,
like less than a hundred digits,
but it wont do for a thousand digits.
I guess, only WinPFGW will work here.

Actually, all primes greater than three
are either of the form 6k-1 or 6k+1

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2003-08-10, 11:46	#12
1260 Feb 2003 2⁵ Posts	Yes you're right. Thanks. I guess, this search for B is time consuming, as I estimate B to have about 5000 digits, and there isnt a sieving program that allows expressions. :(

2003-09-19, 20:31	#13
ixfd64 Bemusing Prompter "Danny" Dec 2002 California 100101010110₂ Posts	You might be able to make one using an "eval()" function (many languages have it). Also, if p and p+2 are twin primes, then p+1 is always a multiple of 6! :) (Except for the case of 3 and 5.)

2003-10-12, 09:48	#14
1260 Feb 2003 2⁵ Posts	the eval() might work for small numbers, like less than a hundred digits, but it wont do for a thousand digits. I guess, only WinPFGW will work here. Actually, all primes greater than three are either of the form 6k-1 or 6k+1