Q: Is 21,221,109 a Composite Number?

 A: Yes, 21,221,109 is a composite number.

Why is 21,221,109 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 21,221,109 can be evenly divided by 1 3 7 9 13 21 27 39 63 81 91 117 189 273 351 567 819 1,053 2,457 2,879 7,371 8,637 20,153 25,911 37,427 60,459 77,733 112,281 181,377 233,199 261,989 336,843 544,131 785,967 1,010,529 1,632,393 2,357,901 3,031,587 7,073,703 and 21,221,109, with no remainder.

Since 21,221,109 cannot be divided by just 1 and 21,221,109, it is a composite number.


More Examples

Number 21,221,10721,221,10821,221,11021,221,111
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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