Q: Is 1,000,155 a Prime Number?

 A: No, 1,000,155 is not a prime number.

Why is 1,000,155 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 1000155 can be evenly divided by 1 3 5 13 15 23 39 65 69 115 195 223 299 345 669 897 1,115 1,495 2,899 3,345 4,485 5,129 8,697 14,495 15,387 25,645 43,485 66,677 76,935 200,031 333,385 and 1,000,155, with no remainder.

Since 1,000,155 cannot be divided by just 1 and 1,000,155, it is not a prime number.


More Examples

Number 1,000,1531,000,1541,000,1561,000,157
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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