3333323333
This number is a prime.
3 3 3 3 3 2 3 3 3 3The smallest triangle-congruent prime with only prime digits. [Capelle]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
3 3 3 3 3 2 3 3 3 3The smallest triangle-congruent prime with only prime digits. [Capelle]