Q: Is 21,002,000 a Prime Number?

 A: No, 21,002,000 is not a prime number.

Why is 21,002,000 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 21002000 can be evenly divided by 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 1,000 2,000 10,501 21,002 42,004 52,505 84,008 105,010 168,016 210,020 262,525 420,040 525,050 840,080 1,050,100 1,312,625 2,100,200 2,625,250 4,200,400 5,250,500 10,501,000 and 21,002,000, with no remainder.

Since 21,002,000 cannot be divided by just 1 and 21,002,000, it is not a prime number.


More Examples

Number 21,001,99821,001,99921,002,00121,002,002
Prime? nononono
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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