10529
This number is a prime.
The smallest Sophie Germain prime for which its safe prime
is a rearrangment of the same digits. [Gaydos]
Removing the zero from the 1287th prime number (10529) produces the 1287th composite number (1529). [Gaydos]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell