Q: Is 421,770 a Prime Number?

 A: No, 421,770 is not a prime number.

Why is 421,770 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 421770 can be evenly divided by 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 827 1,654 2,481 4,135 4,962 8,270 12,405 14,059 24,810 28,118 42,177 70,295 84,354 140,590 210,885 and 421,770, with no remainder.

Since 421,770 cannot be divided by just 1 and 421,770, it is not a prime number.


More Examples

Number 421,768421,769421,771421,772
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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