Q: Is 20,502 a Prime Number?

A: No, 20,502 is not a prime number.

Why is 20,502 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 20502 can be evenly divided by 1 2 3 6 9 17 18 34 51 67 102 134 153 201 306 402 603 1,139 1,206 2,278 3,417 6,834 10,251 and 20,502, with no remainder.

Since 20,502 cannot be divided by just 1 and 20,502, it is not a prime number.

Number	20,500	20,501	20,503	20,504
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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