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Final 2 digits of n-th Mersenne prime A000668(n).
7

%I #23 Oct 18 2024 17:58:51

%S 3,7,31,27,91,71,87,47,51,11,27,27,51,27,87,7,51,71,91,7,11,51,91,71,

%T 51,11,71,7,7,11,47,87,91,27,11,51,71,91,71,47,7,47,71,71,27,51,11,51

%N Final 2 digits of n-th Mersenne prime A000668(n).

%H Great Internet Mersenne Prime Search (GIMPS), <a href="http://www.mersenne.org/">Distributed Computing Projects</a>

%H Mersenne Primes, <a href="http://www.utm.edu/research/primes/mersenne/index.html">History, Theorems and Lists</a>

%t Mod[2^MersennePrimeExponent[Range[48]]-1, 100] (* _Mark Dowdeswell_, Sep 16 2024 *)

%Y Cf. A080172, A000668, A000043.

%K base,more,nonn

%O 1,1

%A _Mark Dowdeswell_, Feb 04 2003

%E Offset corrected by _Arkadiusz Wesolowski_, Jan 26 2012

%E a(39)-a(47) from _Ivan Panchenko_, Apr 11 2018

%E a(48) from _Mark Dowdeswell_, Sep 16 2024