Compare 991901 vs 991987
| Property | 991901 | 991987 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 9919011 | 9919871 |
| Prime factorization | 991901 | 991987 |
| Divisors count | 2 | 2 |
| Divisors | 1, 991901 | 1, 991987 |
| Number of properties | 5 | 4 |
| Additive primes | 29902nd | 29906th |
| Chen primes | 29746th | |
| Emirps | 10991st | |
| Isolated primes | 61692nd | 61701st |
| Primes | 77915th | 77926th |
| Sexy primes (2nd member) | 16280th | |
| Roman numberals | ||
| Base 2 | 111100100010100111012 | 111100100010111100112 |
| Base 3 | 12121011220023 | 12121012020213 |
| Base 4 | 33020221314 | 33020233034 |
| Base 5 | 2232201015 | 2232204225 |
| Base 6 | 331320456 | 331323116 |
| Base 7 | 113005617 | 113010437 |
| Base 8 | 36212358 | 36213638 |
| Base 9 | 17715629 | 17716679 |
| Base 10 | 99190110 | 99198710 |
| Base 11 | 61825911 | 61832711 |
| Base 12 | 3ba02512 | 3ba09712 |
| Base 13 | 28963113 | 28969913 |
| Base 14 | 1bb6a114 | 1bb72314 |
| Base 15 | 148d6b15 | 148dc715 |
| Base 16 | f229d16 | f22f316 |