Q: Is 5,421 a Prime Number?

A: No, 5,421 is not a prime number.

Why is 5,421 not a prime number?

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

The number 5421 can be evenly divided by 1 3 13 39 139 417 1,807 and 5,421, with no remainder.

Since 5,421 cannot be divided by just 1 and 5,421, it is not a prime number.

Number	5,419	5,420	5,422	5,423
Prime?	yes	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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