Number Gossip

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Unique Properties of 127

  • 127 is the number of prime days in a leap year
  • ASCII characters are numbered from 0 to 127 - this also means 127 is the largest integer that can be represented by a signed byte
  • 127 is the largest Mersenne prime with all different digits
  • 127 is the smallest prime whose internal digits form a prime

Rare Properties of 127

Mersenne
Mersenne prime

Common Properties of 127

Deficient
Lucky
Odd
Odious
Prime
Square-free