158 (one hundred fifty-eight) is a natural number. It comes after 157 and before 159.

In Mathematics

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  • 158 is an even number (it can be divided by 2).
  • Its prime factorization is 2×79.
  • Because it has factors other than 1 and itself, 158 is a composite number.
  • 158 is the number of digits in the decimal expansion of 100!, the product of all the natural numbers up to and including 100.