a(n) is the smallest prime p such that 2^p-1 (a Mersenne number) contains 10^n or more decimal digits.
A120357
a(n) is the smallest prime p such that 2^p-1 (a Mersenne number) contains 10^n or more decimal digits.
Terms
- a(0) =2a(1) =31a(2) =331a(3) =3319a(4) =33223a(5) =332191a(6) =3321937a(7) =33219281a(8) =332192831a(9) =3321928097a(10) =33219280951a(11) =332192809589
External references
- oeis: A120357