35

This number is a composite.

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35 is the smallest number formed from two odd primes. Its prime factors are 5 and 7. Note that its digital sum (8) and digital product (15) are each one less than perfect squares. No prime number greater than 3 fits this category. [Storms]

Submitted: 2004-08-06 16:49:20; Last Modified: 2021-01-08 00:23:18.