Q: Is 18,445 a Prime Number?

A: No, 18,445 is not a prime number.

Why is 18,445 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 18445 can be evenly divided by 1 5 7 17 31 35 85 119 155 217 527 595 1,085 2,635 3,689 and 18,445, with no remainder.

Since 18,445 cannot be divided by just 1 and 18,445, it is not a prime number.

Number	18,443	18,444	18,446	18,447
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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