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 123

  • 123 is the smallest Semiprime which is the concatenation of the numbers 1 through n for some n
  • 123 is the smallest squarefree number whose external as well as internal digits digits form a squarefree number

Common Properties of 123

Composite
Deficient
Evil
Odd
Square-free