This number is a prime.
An emirp that is sum of square of consecutive triangular numbers (6 to 11). [Bajpai]
The concatenation of the first 1429 prime numbers, from 2 to 11927, is a 5719-digit prime. Discovered by Yves Gallot in 1998. [Rivera]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell