Q: Is 21,402,003 a Composite Number?

 A: Yes, 21,402,003 is a composite number.

Why is 21,402,003 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 21,402,003 can be evenly divided by 1 3 7 21 43 129 137 173 301 411 519 903 959 1,211 2,877 3,633 5,891 7,439 17,673 22,317 23,701 41,237 52,073 71,103 123,711 156,219 165,907 497,721 1,019,143 3,057,429 7,134,001 and 21,402,003, with no remainder.

Since 21,402,003 cannot be divided by just 1 and 21,402,003, it is a composite number.


More Examples

Number 21,402,00121,402,00221,402,00421,402,005
Composite? yesyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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