25262...74849 (50-digits)
This number is a prime.
2526272829 3031323334 3536373839 4041424344 4546474849
The concatenation of 25 consecutive integers starting from
25 (5^2) and ending with 49 (7^2) forms a prime. [Petrov]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell