Q: Is 42,173,505 a Prime Number?

 A: No, 42,173,505 is not a prime number.

Why is 42,173,505 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 42173505 can be evenly divided by 1 3 5 9 11 15 33 45 55 99 165 495 85,199 255,597 425,995 766,791 937,189 1,277,985 2,811,567 3,833,955 4,685,945 8,434,701 14,057,835 and 42,173,505, with no remainder.

Since 42,173,505 cannot be divided by just 1 and 42,173,505, it is not a prime number.


More Examples

  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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