Number Gossip

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Unique Properties of 109

  • 109 is the smallest number that contains more different digits than its square (11881)
  • 109 is the smallest 3-digit prime such that inserting a zero between any two digits creates a new prime
  • 109 is the smallest prime formed from concatenation in reverse order of two consecutive composite numbers

Common Properties of 109

Deficient
Happy
Odd
Odious
Prime
Square-free
Twin