Q: Is 21,123,011 a Prime Number?
A: No, 21,123,011 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 21123011 can be evenly divided by 1 7 13 91 97 679 1,261 2,393 8,827 16,751 31,109 217,763 232,121 1,624,847 3,017,573 and 21,123,011, with no remainder.
Since 21,123,011 cannot be divided by just 1 and 21,123,011, it is not a prime number.
| Number | 21,123,009 | 21,123,010 | 21,123,012 | 21,123,013 |
| Prime? | no | no | no | yes |