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Forum: Wagstaff PRP Search 2020-08-18, 22:15
Replies: 7
Views: 6,265
Posted By T.Rex
Let's also note that the product of all s: ...

Let's also note that the product of all s:
for i=1 to q-2, when p==5 mod 6, equals 1
for i=1 to q-1, when p==1 mod 6, equals -1
We have a similar property when using Vbra-Reix, starting at...
Forum: Wagstaff PRP Search 2020-08-18, 20:39
Replies: 7
Views: 6,265
Posted By T.Rex
Looking at: https://oeis.org/A018844 it appears...

Looking at: https://oeis.org/A018844 it appears that Wagstaff and Mersenne numbers share half the same seeds: 4, 52, 724, ... {Each seed n is such that n-2=2*(m^2) and n+2=[3or6]*(p^2) where m and p...
Forum: Wagstaff PRP Search 2020-08-18, 18:18
Replies: 7
Views: 6,265
Posted By T.Rex
This holds also when 4 is replaced by: 52, 724, ...

This holds also when 4 is replaced by: 52, 724, 10084, 140452, 1956244, or 27246964 .

Found by means of (Pari/gp):

L = [5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 43, 61, 79, 101, 127, 167,...
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