# Is 219 a prime number?

It is possible to find out using mathematical methods whether a given integer is a prime number or not.

For 219, the answer is: No, 219 is not a prime number.

The list of all positive divisors (i.e., the list of all integers that divide 219) is as follows: 1, 3, 73, 219.

For 219 to be a prime number, it would have been required that 219 has only two divisors, i.e., itself and 1.

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As a consequence:

For 219 to be a prime number, it would have been required that 219 has only two divisors, i.e., itself and 1.

However, 219 is a **semiprime** (also called biprime or 2-almost-prime), because it is the product of a two non-necessarily distinct prime numbers. Indeed, 219 = 3 x 73, where 3 and 73 are both prime numbers.

### Is 219 a deficient number?

Yes, 219 is a deficient number, that is to say 219 is a natural number that is strictly larger than the sum of its proper divisors, i.e., the divisors of 219 without 219 itself (that is 1 + 3 + 73 = 77).