Q: Is 78,821 a Prime Number?

A: No, 78,821 is not a prime number.

Why is 78,821 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 78821 can be evenly divided by 1 23 149 529 3,427 and 78,821, with no remainder.

Since 78,821 cannot be divided by just 1 and 78,821, it is not a prime number.

Number	78,819	78,820	78,822	78,823
Prime?	no	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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