Q: Is 1,020,663 a Prime Number?
A: No, 1,020,663 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 1020663 can be evenly divided by 1 3 7 9 17 21 51 63 119 153 357 953 1,071 2,859 6,671 8,577 16,201 20,013 48,603 60,039 113,407 145,809 340,221 and 1,020,663, with no remainder.
Since 1,020,663 cannot be divided by just 1 and 1,020,663, it is not a prime number.