Q: Is 1,143,621 a Prime Number?
A: No, 1,143,621 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 1143621 can be evenly divided by 1 3 9 31 93 279 4,099 12,297 36,891 127,069 381,207 and 1,143,621, with no remainder.
Since 1,143,621 cannot be divided by just 1 and 1,143,621, it is not a prime number.