Q: Is 21,143,421 a Composite Number?

 A: Yes, 21,143,421 is a composite number.

Why is 21,143,421 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 21,143,421 can be evenly divided by 1 3 9 13 39 117 169 507 1,521 13,901 41,703 125,109 180,713 542,139 1,626,417 2,349,269 7,047,807 and 21,143,421, with no remainder.

Since 21,143,421 cannot be divided by just 1 and 21,143,421, it is a composite number.


More Examples

Number 21,143,41921,143,42021,143,42221,143,423
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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