Q: Is 266,438 a Prime Number?
A: No, 266,438 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 266438 can be evenly divided by 1 2 101 202 1,319 2,638 133,219 and 266,438, with no remainder.
Since 266,438 cannot be divided by just 1 and 266,438, it is not a prime number.