Q: Is 123,580 a Prime Number?

A: No, 123,580 is not a prime number.

Why is 123,580 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 123580 can be evenly divided by 1 2 4 5 10 20 37 74 148 167 185 334 370 668 740 835 1,670 3,340 6,179 12,358 24,716 30,895 61,790 and 123,580, with no remainder.

Since 123,580 cannot be divided by just 1 and 123,580, it is not a prime number.

Number	123,578	123,579	123,581	123,582
Prime?	no	no	yes	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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