37373...34343 (160-digits)

This number is a prime.

                                                       3737373737 3737373737
3737373737 3737373737 3737373737 3737373737 3737373737 3737434343 4343434343
4343434343 4343434343 4343434343 4343434343 4343434343 4343434343 4343434343

+ Thirty-seven 37's followed by forty-three 43's is prime. [De Geest]

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