Primes p (A000043) such that 2^p-1 is prime (A000668) and congruent to 271 mod 6!.

A145044

Primes p (A000043) such that 2^p-1 is prime (A000668) and congruent to 271 mod 6!.

Terms

    a(0) =13a(1) =61a(2) =2281a(3) =3217a(4) =23209a(5) =44497a(6) =132049a(7) =13466917a(8) =30402457a(9) =42643801

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