[go: up one dir, main page]

login
Numbers n with property that either the n-th Fibonacci number is prime or the concatenation of its prime factors is prime.
0

%I #15 Jan 17 2021 11:10:16

%S 3,4,5,7,8,11,13,17,23,24,28,29,34,43,47,50,52,58,71,77,83,131,137,

%T 163,197,235,238,319,359,431,433,449,509,569,570,571,669,949,958,1211,

%U 1305

%N Numbers n with property that either the n-th Fibonacci number is prime or the concatenation of its prime factors is prime.

%C Up to and including a(17)=52, the sequence are the n such that A038526(n) is prime. Extrapolating, one would expect it to continue 83,86,93,95,131,137,139,174,182,... - _R. J. Mathar_, Oct 12 2007

%Y Cf. A000045, A037276, A038526.

%K nonn,base,more

%O 1,1

%A _Jeff Burch_

%E More terms from _Thomas Baruchel_, Oct 11 2003

%E More terms from _Sean A. Irvine_, Jan 16 2021