Q: Is 100,155 a Prime Number?

A: No, 100,155 is not a prime number.

Why is 100,155 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 100155 can be evenly divided by 1 3 5 11 15 33 55 165 607 1,821 3,035 6,677 9,105 20,031 33,385 and 100,155, with no remainder.

Since 100,155 cannot be divided by just 1 and 100,155, it is not a prime number.

Number	100,153	100,154	100,156	100,157
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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