Q: Is 220,143 a Prime Number?

A: No, 220,143 is not a prime number.

Why is 220,143 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 220143 can be evenly divided by 1 3 7 11 21 33 77 231 953 2,859 6,671 10,483 20,013 31,449 73,381 and 220,143, with no remainder.

Since 220,143 cannot be divided by just 1 and 220,143, it is not a prime number.

Number	220,141	220,142	220,144	220,145
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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