Q: Is 5,125,421 a Prime Number?
A: No, 5,125,421 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 5125421 can be evenly divided by 1 7 19 89 133 433 623 1,691 3,031 8,227 11,837 38,537 57,589 269,759 732,203 and 5,125,421, with no remainder.
Since 5,125,421 cannot be divided by just 1 and 5,125,421, it is not a prime number.