21347
This number is a prime.
Just showing those entries submitted by 'Axoy': (Click here to show all)
The first five Lucas numbers concatenated form a prime. [Axoy]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
Just showing those entries submitted by 'Axoy': (Click here to show all)
The first five Lucas numbers concatenated form a prime. [Axoy]