Q: Is 21,000,020 a Composite Number?

 A: Yes, 21,000,020 is a composite number.

Why is 21,000,020 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 21,000,020 can be evenly divided by 1 2 4 5 10 20 31 62 124 155 310 620 33,871 67,742 135,484 169,355 338,710 677,420 1,050,001 2,100,002 4,200,004 5,250,005 10,500,010 and 21,000,020, with no remainder.

Since 21,000,020 cannot be divided by just 1 and 21,000,020, it is a composite number.


More Examples

Number 21,000,01821,000,01921,000,02121,000,022
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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