Q: Is 200,991 a Prime Number?

A: No, 200,991 is not a prime number.

Why is 200,991 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 200991 can be evenly divided by 1 3 7 17 21 51 119 357 563 1,689 3,941 9,571 11,823 28,713 66,997 and 200,991, with no remainder.

Since 200,991 cannot be divided by just 1 and 200,991, it is not a prime number.

Number	200,989	200,990	200,992	200,993
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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