Q: Is 123,855 a Prime Number?

A: No, 123,855 is not a prime number.

Why is 123,855 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 123855 can be evenly divided by 1 3 5 15 23 69 115 345 359 1,077 1,795 5,385 8,257 24,771 41,285 and 123,855, with no remainder.

Since 123,855 cannot be divided by just 1 and 123,855, it is not a prime number.

Number	123,853	123,854	123,856	123,857
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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