Thread: Largest known prime p such that 6p-1 and 6p+1 are prime?
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Old 2016-04-05, 18:58   #4
Batalov
 
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Mar 2008
Phi(4,2^7658614+1)/2

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2280196563*2^9982+1 = p (3015 digits)
and twin pair =
3*2280196563*2^9983+5 = 6p-1
3*2280196563*2^9983+7 = 6p+1
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