Q: Is 1,388,121 a Prime Number?

 A: No, 1,388,121 is not a prime number.

Why is 1,388,121 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 1388121 can be evenly divided by 1 3 7 19 21 49 57 71 133 147 213 343 399 497 931 1,029 1,349 1,491 2,793 3,479 4,047 6,517 9,443 10,437 19,551 24,353 28,329 66,101 73,059 198,303 462,707 and 1,388,121, with no remainder.

Since 1,388,121 cannot be divided by just 1 and 1,388,121, it is not a prime number.


More Examples

Number 1,388,1191,388,1201,388,1221,388,123
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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