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A283158
Numbers k such that A011544(k-1) is a prime.
0
1, 555, 1508, 1781, 4224, 7037
OFFSET
1,2
COMMENTS
For k <= 16000, there are six primes in sequence A011544.
Round(e*10^112279) = floor(e*10^112279), and floor(e*10^112279) = A011544(112279) (=A007512(7)) is a prime. Thus 112280 = A064118(7) is also a term.
LINKS
Eric Weisstein's World of Mathematics, e-Prime
MATHEMATICA
Do[If[PrimeQ[Round[E*10^(n-1)]], Print[n], {n, 16000}]
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
XU Pingya, Mar 01 2017
STATUS
approved