Q: Is 521,126 a Prime Number?
A: No, 521,126 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 521126 can be evenly divided by 1 2 67 134 3,889 7,778 260,563 and 521,126, with no remainder.
Since 521,126 cannot be divided by just 1 and 521,126, it is not a prime number.