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A165696 a(n) is the smallest number m such that all the n numbers reversal(m^k), k<n+1 are primes. 2
2, 14, 325, 3244, 3244, 110218462, 32149366346, 10212002596432 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

MATHEMATICA

Both numbers reversal(14)=41 & reversal(14^2)=691 are primes and 14 is the

smallest number with this property so a(2)=14.

CROSSREFS

Cf. A118212, A118213, A165697, A165698, A165699.

Sequence in context: A277035 A078675 A133130 * A180605 A094155 A132626

Adjacent sequences:  A165693 A165694 A165695 * A165697 A165698 A165699

KEYWORD

base,hard,more,nonn

AUTHOR

Farideh Firoozbakht, Sep 29 2009

EXTENSIONS

a(8) from Matthias Baur, Mar 03 2021

STATUS

approved

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Last modified July 26 10:21 EDT 2021. Contains 346294 sequences. (Running on oeis4.)