Q: Is 42,243,138 a Prime Number?

 A: No, 42,243,138 is not a prime number.

Why is 42,243,138 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 42243138 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 89 126 178 267 534 623 801 1,246 1,602 1,869 3,738 3,767 5,607 7,534 11,214 11,301 22,602 26,369 33,903 52,738 67,806 79,107 158,214 237,321 335,263 474,642 670,526 1,005,789 2,011,578 2,346,841 3,017,367 4,693,682 6,034,734 7,040,523 14,081,046 21,121,569 and 42,243,138, with no remainder.

Since 42,243,138 cannot be divided by just 1 and 42,243,138, 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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