Q: Is 28,821 a Prime Number?

A: No, 28,821 is not a prime number.

Why is 28,821 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 28821 can be evenly divided by 1 3 13 39 739 2,217 9,607 and 28,821, with no remainder.

Since 28,821 cannot be divided by just 1 and 28,821, it is not a prime number.

Number	28,819	28,820	28,822	28,823
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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