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Unique Properties of 131

  • The 131st Fibonacci number (1066340417491710595814572169) is the smallest Fibonacci prime which contains all the digits from 0 to 9
  • 131 is the smallest Honaker prime: the sum of its digits equals the sum of the digits of its index (32) in the prime sequence
  • 131 is the smallest prime that is a concatenation of a prime and its first digit
  • 131 is the smallest prime which stays prime when the end digits (on both sides) are repeated once (11311 is also prime)

Rare Properties of 131

Palindromic prime

Common Properties of 131

Deficient
Odd
Odious
Palindrome
Prime
Square-free
Ulam
Undulating