Q: Is 1,388,421 a Prime Number?
A: No, 1,388,421 is 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 1388421 can be evenly divided by 1 3 9 27 61 81 183 281 549 843 1,647 2,529 4,941 7,587 17,141 22,761 51,423 154,269 462,807 and 1,388,421, with no remainder.
Since 1,388,421 cannot be divided by just 1 and 1,388,421, it is not a prime number.