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A178329 Numbers n such that reversal(n^n) is prime. 0
8, 5569, 34351 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The numbers corresponding to the second and third terms are probable primes.

a(3) > 26580. - Giovanni Resta, Mar 01 2013

a(4) > 43200 according to Thomas Ritschel (2013). - M. F. Hasler, Oct 31 2014

LINKS

Table of n, a(n) for n=1..3.

Carlos Rivera, Puzzle 653, published in (Aug./Sep.?) 2012, answers added between March and October 2013; The Prime Puzzles and Problems Connection.

CROSSREFS

Cf. A004086.

Sequence in context: A340890 A093937 A318897 * A062030 A052497 A304426

Adjacent sequences: A178326 A178327 A178328 * A178330 A178331 A178332

KEYWORD

nonn,base,bref,hard,more

AUTHOR

Farideh Firoozbakht, Jun 16 2010

EXTENSIONS

a(3) from Thomas Ritschel (2013), added by Arkadiusz Wesolowski, Oct 30 2014

STATUS

approved

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Last modified January 29 01:41 EST 2023. Contains 359905 sequences. (Running on oeis4.)