639

This number is a composite.

Single Curio View: (Seek other curios for this number)

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]

Submitted: 2004-10-18 19:07:35; Last Modified: 2008-01-30 17:28:00.