Thread: Primes found!
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Old 2015-01-18, 19:13   #11
Batalov
 
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"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

22×3×7×109 Posts
Cool

And here is its evil twin: i.e. all digits are "7"s, except for one and two "9"s.
(7*10^10014+18*10^3046+11)/9 (PRP) and
(7*10^10014+18*10^3046-7)/9 (PRP)
ECPP proofs are in progress.

There is also a 6655-digit pair using only "3"s and "1"s (proven primes)
(10^6655-6*10^4147-7)/3
(10^6655-6*10^4147-1)/3

M.Kamada collects these records.
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