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URL: https://oeis.org/A165697

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A165697
a(n) is the smallest prime p such that all the n numbers reversal(p^k), k<n+1 are primes.
2
2, 37, 3121, 10429, 10282339, 9835884797, 101740496633
OFFSET
1,1
COMMENTS
By an interesting approach I was able to find a(7). [From Farideh Firoozbakht, Sep 30 2009]
EXAMPLE
Both numbers reversal(37)=73 & reversal(37^2)=9631 are primes and 37 is the
smallest prime number with this property so a(2)=37.
CROSSREFS
KEYWORD
base,hard,more,nonn
AUTHOR
Farideh Firoozbakht, Sep 29 2009
EXTENSIONS
a(7) from Farideh Firoozbakht, Sep 30 2009
STATUS
approved