Q: Is 42,005,500 a Prime Number?

 A: No, 42,005,500 is not a prime number.

Why is 42,005,500 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 42005500 can be evenly divided by 1 2 4 5 10 20 25 50 100 125 250 500 84,011 168,022 336,044 420,055 840,110 1,680,220 2,100,275 4,200,550 8,401,100 10,501,375 21,002,750 and 42,005,500, with no remainder.

Since 42,005,500 cannot be divided by just 1 and 42,005,500, it is not a prime number.


More Examples

Number 42,005,49842,005,49942,005,50142,005,502
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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