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 513

  • 513 generates the smallest 10-digit palindrome when written in binary
  • 513 is the smallest semi-perimeter of a Pythagorean triangle such that all the side and the semi-perimeter are not squarefree

Common Properties of 513

Composite
Deficient
Evil
Odd