Q: Is 978,605 a Prime Number?

A: No, 978,605 is not a prime number.

Why is 978,605 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 978605 can be evenly divided by 1 5 17 29 85 145 397 493 1,985 2,465 6,749 11,513 33,745 57,565 195,721 and 978,605, with no remainder.

Since 978,605 cannot be divided by just 1 and 978,605, it is not a prime number.

Number	978,603	978,604	978,606	978,607
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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