Q: Is 21,155,013 a Prime Number?
A: No, 21,155,013 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 21155013 can be evenly divided by 1 3 9 11 27 33 81 99 297 891 23,743 71,229 213,687 261,173 641,061 783,519 1,923,183 2,350,557 7,051,671 and 21,155,013, with no remainder.
Since 21,155,013 cannot be divided by just 1 and 21,155,013, it is not a prime number.
| Number | 21,155,011 | 21,155,012 | 21,155,014 | 21,155,015 |
| Prime? | no | no | no | no |