odd numbers

One, three, five...

Odd numbers are integers that cannot be divided evenly by two: 1, 3, 5, 7, and so on.

They alternate with even numbers along the number line.

In practical use, odd numbers often appear on one side of a street while even numbers appear on the other: The building is at 247, so it's on the odd-numbered side.

Related
  • oneLowest positive integer
  • threeSum of one twice
  • integersNumbers without fractional components
  • fiveFour plus one
  • sevenFourth prime number

remainder · left over · eleven · divisors · parity · nine · number theory · asymmetry · lucky number seven · magic number · superstition · prime · mismatched · divisible · imbalance · strange · lucky · fifteen

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mathematical parity

odd numberseven numbers

Integers divisible by two

evens

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Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G