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 83

  • There are exactly 83 right-truncatable primes
  • 83 is the smallest multi-digit prime consisting of only curved digits
  • 83 is the smallest prime number which is the sum of a prime number of consecutive primes in a prime number of different ways (verified by Christopher Heckman)
  • 83 is the smallest nontrivial integer whose square (6889) is a strobogrammatic number
  • There are 83 squares with nine digits, all distinct
  • There are 83 numbers n such that writing out 1 through n uses precisely n ones

Common Properties of 83