Q: Is 187,143 a Prime Number?

A: No, 187,143 is not a prime number.

Why is 187,143 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 187143 can be evenly divided by 1 3 11 33 53 107 159 321 583 1,177 1,749 3,531 5,671 17,013 62,381 and 187,143, with no remainder.

Since 187,143 cannot be divided by just 1 and 187,143, it is not a prime number.

Number	187,141	187,142	187,144	187,145
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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