3595601

This number is a prime.

p=3595601 and q=8346551 are the smallest pair of primes such that p is a substring of q^2 and also q is a substring of p^2, i.e., 3595601^2 = 1292(8346551)201 8346551^2 = 6966491(3595601). Obtained by Giorgos Kalogeropoulos. [Rivera]