Q: Is 404,005 a Prime Number?

A: No, 404,005 is not a prime number.

Why is 404,005 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 404005 can be evenly divided by 1 5 7 17 35 49 85 97 119 245 485 595 679 833 1,649 3,395 4,165 4,753 8,245 11,543 23,765 57,715 80,801 and 404,005, with no remainder.

Since 404,005 cannot be divided by just 1 and 404,005, it is not a prime number.

Number	404,003	404,004	404,006	404,007
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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