Q: Is 8,426,421 a Prime Number?
A: No, 8,426,421 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 8426421 can be evenly divided by 1 3 9 563 1,663 1,689 4,989 5,067 14,967 936,269 2,808,807 and 8,426,421, with no remainder.
Since 8,426,421 cannot be divided by just 1 and 8,426,421, it is not a prime number.