Q: Is 8,420,878 a Prime Number?
A: No, 8,420,878 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 8420878 can be evenly divided by 1 2 431 862 9,769 19,538 4,210,439 and 8,420,878, with no remainder.
Since 8,420,878 cannot be divided by just 1 and 8,420,878, it is not a prime number.