A058990 Smallest power of two whose reversal of its n-th power is a prime.

2, 4, 256, 2, 2, 16, 2, 8, 32, 2, 32, 4, 268435456, 32, 8, 3794275180128377091639574036764685364535950857523710002444946112771297432041422848, 2, 4951760157141521099596496896

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 * A343255 A262413 A363039

Adjacent sequences: A058987 A058988 A058989 * A058991 A058992 A058993

Keyword

nonn,base

Author

Robert G. Wilson v, Jan 16 2001

Status

approved