Q: Is 142,405 a Prime Number?

A: No, 142,405 is not a prime number.

Why is 142,405 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 142405 can be evenly divided by 1 5 19 95 1,499 7,495 28,481 and 142,405, with no remainder.

Since 142,405 cannot be divided by just 1 and 142,405, it is not a prime number.

Number	142,403	142,404	142,406	142,407
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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