mersenneforum.org - View Single Post - How does the trial factoring work with 15K*2^n-1

jocelynl · 2003-07-11, 14:23

is there a special form for factors in 15K*2^n-1 like the one in 2^p-1

(2kp+1) | 2^p-1

And is there properties like 1 or 7 mod 8?

joss

2003-07-11, 14:23	#1
jocelynl Sep 2002 2·131 Posts	*How does the trial factoring work with 15K2^n-1** is there a special form for factors in 15K*2^n-1 like the one in 2^p-1 (2kp+1) \| 2^p-1 And is there properties like 1 or 7 mod 8? joss