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 191

  • 191 is the smallest palindromic prime whose sum of digits is a multidigit palindromic prime
  • By adding up the values of the common US coins, one obtains 191 ¢ (silver dollar + half dollar + quarter + dime + nickel + penny)

Rare Properties of 191

Palindromic prime

Common Properties of 191

Deficient
Lazy caterer
Odd
Odious
Palindrome
Prime
Square-free
Twin
Undulating