Q: Is 28,791 a Prime Number?

A: No, 28,791 is not a prime number.

Why is 28,791 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 28791 can be evenly divided by 1 3 7 9 21 63 457 1,371 3,199 4,113 9,597 and 28,791, with no remainder.

Since 28,791 cannot be divided by just 1 and 28,791, it is not a prime number.

Number	28,789	28,790	28,792	28,793
Prime?	yes	no	no	yes

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

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