1,1

A Mersenne prime is a prime of the form 2^p - 1 where p is a prime.

C. K. Caldwell, Mersenne Primes.

O. E. Pol, Determinacion geometrica de los numeros primos y perfectos.

a(2)=823543 because M(2)=7 and we can write 823543=7^7 or 823543=7*7*7*7*7*7*7.

Cf. A000043, A000312, A000668, A086166.

Adjacent sequences: A132658 A132659 A132660 this_sequence A132662 A132663 A132664

Sequence in context: A068738 A132649 A086166 this_sequence A050650 A106536 A023925

nonn,bref

Omar E. Pol (info(AT)polprimos.com), Aug 25 2007