3

This number is a prime.

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

Jason Funk © 2002

3 is the only number which is equal to the sum of all the natural numbers less than it. [Murthy]

The only prime whose factorial is a perfect number. [Murthy]

The only prime sandwiched between a prime and a composite number. [Murthy]