1583
This number is a prime.
Just showing those entries submitted by 'Bajpai': (Click here to show all)
The smallest emirp that is the sum of first n nontrivial
(multidigit) palindromes (11+22+33+...+161+171=1583). [Bajpai]
The smallest Sophie Germain prime p such that sod(p); the sod(p^2); the sod(p^3); all are
prime. [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell