Q: Is 521,725 a Prime Number?

A: No, 521,725 is not a prime number.

Why is 521,725 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 521725 can be evenly divided by 1 5 25 41 205 509 1,025 2,545 12,725 20,869 104,345 and 521,725, with no remainder.

Since 521,725 cannot be divided by just 1 and 521,725, it is not a prime number.

Number	521,723	521,724	521,726	521,727
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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