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Unique Properties of 809

  • 809 is the smallest prime whose fourth power is zeroless pandigital (i.e., containing all digits from 1 to 9)
  • 809 is the only three-digit pime: pimes are primes whose digits contain circles, i.e., using only the digits 0, 6, 8, 9
  • 809 is the smallest Cyclops prime with holy digits (0,8,8,9)

Common Properties of 809

Deficient
Odd
Odious
Prime
Square-free
Twin