The difference between Composite number and Semiprime

When used as nouns, composite number means a (nonzero) natural number that is expressible as the product of two (or more) natural numbers other than itself and 1, whereas semiprime means a natural number that is the product of two (not necessarily distinct) prime numbers.


Semiprime is also adjective with the meaning: that has properties derived directly or by extension from a semiprime.

check bellow for the other definitions of Composite number and Semiprime

  1. Composite number as a noun (number theory):

    A (nonzero) natural number that is expressible as the product of two (or more) natural numbers other than itself and 1.

  1. Semiprime as a noun (number theory):

    A natural number that is the product of two (not necessarily distinct) prime numbers.

  1. Semiprime as an adjective (mathematics):

    That has properties derived directly or by extension from a semiprime.