Q: Is 6,345 a Prime Number?

A: No, 6,345 is not a prime number.

Why is 6,345 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 6345 can be evenly divided by 1 3 5 9 15 27 45 47 135 141 235 423 705 1,269 2,115 and 6,345, with no remainder.

Since 6,345 cannot be divided by just 1 and 6,345, it is not a prime number.

Number	6,343	6,344	6,346	6,347
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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