41373129231917131175321
This number is a prime.
413 7312923191 7131175321
The reverse concatenation of first 14 non-composites is prime. [Gupta]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
413 7312923191 7131175321
The reverse concatenation of first 14 non-composites is prime. [Gupta]