Q: Is 501,405 a Prime Number?

A: No, 501,405 is not a prime number.

Why is 501,405 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 501405 can be evenly divided by 1 3 5 15 33,427 100,281 167,135 and 501,405, with no remainder.

Since 501,405 cannot be divided by just 1 and 501,405, it is not a prime number.

Number	501,403	501,404	501,406	501,407
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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