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A228127
Numbers n such that first n digits of A091724 (Decimal expansion of E^(2*EulerGamma)) gives a prime number.
0
1, 2, 3, 1080
OFFSET
1,2
COMMENTS
a(5) > 10^4.
LINKS
Eric Weisstein's World of Mathematics, ConstantPrimes
Eric Weisstein's World of Mathematics, IntegerSequencePrimes
MATHEMATICA
nn=1100; With[{c=RealDigits[E^(2*EulerGamma), 10, nn][[1]]}, Select[ Range[ nn], PrimeQ[FromDigits[Take[c, #]]]&]] (* Harvey P. Dale, Nov 13 2014 *)
CROSSREFS
Cf. A091724.
Sequence in context: A136611 A004898 A062920 * A327660 A036111 A359323
KEYWORD
nonn,more,base
AUTHOR
Robert Price, Aug 26 2013
STATUS
approved