Q: Is 21,021,018 a Prime Number?
A: No, 21,021,018 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 21021018 can be evenly divided by 1 2 3 6 3,503,503 7,007,006 10,510,509 and 21,021,018, with no remainder.
Since 21,021,018 cannot be divided by just 1 and 21,021,018, it is not a prime number.
| Number | 21,021,016 | 21,021,017 | 21,021,019 | 21,021,020 |
| Prime? | no | no | no | no |