10

This number is a composite.

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

The smallest composite number (the fifth one) which is smaller than the corresponding (the fifth) prime 11. [Murthy]

The only number with the property that the sum as well as the difference of its prime divisors are primes (2 + 5 = 7 and 5 - 2 = 3). [Murthy]