Q: Is 123,220 a Prime Number?

A: No, 123,220 is not a prime number.

Why is 123,220 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 123220 can be evenly divided by 1 2 4 5 10 20 61 101 122 202 244 305 404 505 610 1,010 1,220 2,020 6,161 12,322 24,644 30,805 61,610 and 123,220, with no remainder.

Since 123,220 cannot be divided by just 1 and 123,220, it is not a prime number.

Number	123,218	123,219	123,221	123,222
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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