mersenneforum.org Largest known prime p such that 6p-1 and 6p+1 are prime?
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2016-04-08, 21:15   #12
science_man_88

"Forget I exist"
Jul 2009
Dumbassville

26·131 Posts

Quote:
 Originally Posted by Batalov In addition to what Charles wrote, infinitude of composite members of any sequence has nothing to do with the infinitude of prime members. sm88, you need to start thinking at least about the basic properties of infinities: that is, (even for complementary sets, e.g. a set "A" and a set of all others "non-A"): - a sum of a finite set and and infinite set is an infinite set; - a sum of an infinite set and and infinite set is an infinite set, so - knowing that one subset is infinite (e.g. "non-A") gives you no information about its complement's infinitude.
okay thanks.

, the local king of the idiots.

Last fiddled with by science_man_88 on 2016-04-08 at 21:15

 2016-04-11, 20:34 #13 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 3×3,229 Posts 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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