Q: Is 315,423 a Prime Number?

A: No, 315,423 is not a prime number.

Why is 315,423 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 315423 can be evenly divided by 1 3 9 101 303 347 909 1,041 3,123 35,047 105,141 and 315,423, with no remainder.

Since 315,423 cannot be divided by just 1 and 315,423, it is not a prime number.

Number	315,421	315,422	315,424	315,425
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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