Number Gossip

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Unique Properties of 143

  • The largest amount of money one can have in n $1, $2, $5, $10, $20, and $50 bills and not be able to make exact change for a $100 bill
  • 143 is the smallest integers n such that the prime factorization of n uses the proper subset of distinct digits of n (143 = 111 131)
  • 143 is the smallest Tnaillirb: a brilliant number whose reversal is a different brilliant number. This is a special subset of emirpimes, with only 102 examples below 100000
  • 143 is the smallest number n such that the last n digits of nn form a prime number

Rare Properties of 143


Common Properties of 143