login
Primes p such that the digits of p^2, reversed, include the digits of p as a substring.
4

%I #11 Feb 14 2021 08:18:09

%S 5,87690769,311314139,44466725441,38460053757197

%N Primes p such that the digits of p^2, reversed, include the digits of p as a substring.

%C a(6) > 6*10^14. - _Giovanni Resta_, Oct 21 2018

%e 311314139^2 = 969164(931413113)21.

%Y Cf. A115761, A115762, A115764, A115738.

%K nonn,base,more

%O 1,1

%A _Giovanni Resta_, Jan 30 2006

%E a(5) from _Giovanni Resta_, Sep 11 2018