Q: Is 321,143 a Prime Number?

A: Yes, 321,143 is a prime number.

Why is 321,143 a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 321143 can be evenly divided by 1 and 321,143, with no remainder.

Since 321,143 can be divided by just 1 and 321,143, it is a prime number.

Number	321,141	321,142	321,144	321,145
Prime?	no	no	no	no

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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