19145...90409 (26-digits)

This number is a prime.

                                                191454 7110356502 7335990409

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

The smallest emirp that can be expressed as the sum of seventh powers of n consecutive primes, i.e., (3229^7+3251^7+3253^7+3257^7+3259^7), (case n=5). [Bajpai]