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devarajkandadai 2013-10-23 05:41

Two possible challenges
1) This is with reference to the large prime: Id 116042 in the database pertaining to large primes. Q: Is this Sophie prime also a Mangammal prime?

(for definition see A123239 ).

2) Are there infinitely many Shantha primes? ( see encyclopedia in )

A.K. Devaraj

MattcAnderson 2013-11-09 23:30

Hi man,

I admire your contribution to the encyclopedia for integer sequences and to this forum.

To quote Primes that do not divide 3^n-2 for any n.



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