639

This number is a composite.

Just showing those entries submitted by 'Rodrigo': (Click here to show all)

+ The smallest number that can be expressed as the sum of the k first prime numbers for some k, and congruent with 3 modulus 4. [Rodrigo]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell