16661...80191 (40-digits)

This number is a prime.

                                 1666116901 1666880101 1668188611 1669080191

+ The smallest invertible prime formed from the concatenation of four consecutive bemirps, i.e., {1666116901, 1666880101, 1668188611, 1669080191}. [Bajpai]

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