Q: Is 266,428 a Prime Number?
A: No, 266,428 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 266428 can be evenly divided by 1 2 4 43 86 172 1,549 3,098 6,196 66,607 133,214 and 266,428, with no remainder.
Since 266,428 cannot be divided by just 1 and 266,428, it is not a prime number.