This number is a composite.
Single Curio View: (Seek other curios for this number)1683 is the ONLY number N that can be expressed as a sum in exactly N ways using three distinct primes each time (the order of the primes in the sum is irrelevant). [Rivera]
Submitted: 2003-06-11 16:06:02; Last Modified: 2008-03-10 14:23:11.
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