Number Gossip

(Enter a number and I'll tell you everything you wanted to know about it but were afraid to ask.)

Unique Properties of 403

  • 403 is the smallest product of two different primes which are reverses of each other
  • 403 is the smallest semiprime that is the floor of en (achieved for n=6)
  • 403 is the smallest non-palindrome whose square is the product of a number and its reverse (4032 = 162409 = 169 * 961)

Common Properties of 403

Composite
Deficient
Odd
Odious
Square-free