Q: Is 123,777 a Prime Number?

A: No, 123,777 is not a prime number.

Why is 123,777 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 123777 can be evenly divided by 1 3 9 17 51 153 809 2,427 7,281 13,753 41,259 and 123,777, with no remainder.

Since 123,777 cannot be divided by just 1 and 123,777, it is not a prime number.

Number	123,775	123,776	123,778	123,779
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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