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Old 2016-04-11, 20:34   #13
Batalov
 
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"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

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For kicks and giggles, I found a larger triple set:
23660119537*2^18001-1 = p (5430 digits)
3*23660119537*2^18002-5 = 6p-1, twin
3*23660119537*2^18002-7 = 6p+1, twin
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