20

This number is a composite.

Single Curio View:   (Seek other curios for this number)
The smallest composite number which, summed to all previous primes, yields a prime. [Silva]

Submitted: 2009-01-12 19:23:00;   Last Modified: 2009-01-12 21:22:43.
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell