Q: Is 820,009 a Prime Number?

A: No, 820,009 is not a prime number.

Why is 820,009 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 820009 can be evenly divided by 1 47 73 239 3,431 11,233 17,447 and 820,009, with no remainder.

Since 820,009 cannot be divided by just 1 and 820,009, it is not a prime number.

Number	820,007	820,008	820,010	820,011
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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