Q: Is 428,143 a Prime Number?

A: Yes, 428,143 is a prime number.

Why is 428,143 a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 428143 can be evenly divided by 1 and 428,143, with no remainder.

Since 428,143 can be divided by just 1 and 428,143, it is a prime number.

Number	428,141	428,142	428,144	428,145
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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