18116...01109 (588-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

Just showing those entries submitted by 'Gaydos': (Click here to show all)

+ The concatenation of the first 125 strobogrammatic numbers is a prime number. [Gaydos]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell