Q: Is 381,423 a Prime Number?
A: No, 381,423 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 381423 can be evenly divided by 1 3 7 21 41 123 287 443 861 1,329 3,101 9,303 18,163 54,489 127,141 and 381,423, with no remainder.
Since 381,423 cannot be divided by just 1 and 381,423, it is not a prime number.