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A058990 Smallest power of two whose reversal of its n-th power is a prime. 0
2, 4, 256, 2, 2, 16, 2, 8, 32, 2, 32, 4, 268435456, 32, 8, 3794275180128377091639574036764685364535950857523710002444946112771297432041422848, 2, 4951760157141521099596496896 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

MATHEMATICA

Do[k = 2; While[ ! PrimeQ[ ToExpression[ StringReverse[ ToString[k^n] ] ] ], k *= 2]; Print[k], {n, 1, 18} ]

CROSSREFS

Sequence in context: A260755 A173566 A271551 * A262413 A012437 A012434

Adjacent sequences:  A058987 A058988 A058989 * A058991 A058992 A058993

KEYWORD

nonn,base

AUTHOR

Robert G. Wilson v, Jan 16 2001

STATUS

approved

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Last modified April 18 14:58 EDT 2021. Contains 343089 sequences. (Running on oeis4.)