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A057203 Numbers n such that 2^n + 23 is prime. 3
3, 7, 39, 79, 359, 451, 1031, 1039 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

MATHEMATICA

Do[ If[ PrimeQ[2^n + 23], Print[ n ]], {n, 1, 5000} ]

CROSSREFS

Sequence in context: A169741 A192198 A061931 * A056250 A113870 A074582

Adjacent sequences:  A057200 A057201 A057202 * A057204 A057205 A057206

KEYWORD

nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 16 2000

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Last modified February 17 12:38 EST 2012. Contains 206021 sequences.