Q: Is 105,105,021 a Prime Number?
A: No, 105,105,021 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 105105021 can be evenly divided by 1 3 7 21 5,005,001 15,015,003 35,035,007 and 105,105,021, with no remainder.
Since 105,105,021 cannot be divided by just 1 and 105,105,021, it is not a prime number.
| Number | 105,105,019 | 105,105,020 | 105,105,022 | 105,105,023 |
| Prime? | no | no | no | yes |