Q: Is 21,000,024 a Prime Number?

 A: No, 21,000,024 is not a prime number.

Why is 21,000,024 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 21000024 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 36 72 263 526 789 1,052 1,109 1,578 2,104 2,218 2,367 3,156 3,327 4,436 4,734 6,312 6,654 8,872 9,468 9,981 13,308 18,936 19,962 26,616 39,924 79,848 291,667 583,334 875,001 1,166,668 1,750,002 2,333,336 2,625,003 3,500,004 5,250,006 7,000,008 10,500,012 and 21,000,024, with no remainder.

Since 21,000,024 cannot be divided by just 1 and 21,000,024, 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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