login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A132661
Mersenne prime M(n) raised to power M(n).
1
27, 823543, 17069174130723235958610643029059314756044734431
OFFSET
1,1
COMMENTS
A Mersenne prime is a prime of the form 2^p - 1 where p is a prime.
FORMULA
a(n) = A000312(A000668(n)). - Amiram Eldar, Oct 17 2024
EXAMPLE
a(2) = 823543 because M(2) = 7 and we can write 823543 = 7^7 or 823543 = 7*7*7*7*7*7*7.
MATHEMATICA
Map[(2^#-1)^(2^#-1) &, MersennePrimeExponent[Range[3]]] (* Amiram Eldar, Oct 17 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Aug 25 2007
STATUS
approved