Semiprime

This article defines a property that can be evaluated for a natural number, i.e., every natural number either satisfies the property or does not satisfy the property.
View a complete list of properties of natural numbers

Definition

A semiprime is a composite natural number that is the product of two (possibly equal) primes. In other words, a semiprime is a $2$-almost prime.

Facts

• Carmichael number is not semiprime