Q: Is 621,018 a Prime Number?
A: No, 621,018 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 621018 can be evenly divided by 1 2 3 6 9 18 34,501 69,002 103,503 207,006 310,509 and 621,018, with no remainder.
Since 621,018 cannot be divided by just 1 and 621,018, it is not a prime number.