Compare 990989 vs 991181
| Property | 990989 | 991181 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 9909891 | 9911811 |
| Prime factorization | 990989 | 991181 |
| Divisors count | 2 | 2 |
| Divisors | 1, 990989 | 1, 991181 |
| Number of properties | 4 | 6 |
| Additive primes | 29883rd | |
| Chen primes | 29726th | 29730th |
| Emirps | 10968th | 10975th |
| Isolated primes | 61633rd | 61647th |
| Primes | 77848th | 77864th |
| Sexy primes (1st member) | 16267th | |
| Roman numberals | ||
| Base 2 | 111100011111000011012 | 111100011111110011012 |
| Base 3 | 12121001010223 | 12121001221023 |
| Base 4 | 33013300314 | 33013330314 |
| Base 5 | 2232024245 | 2232042115 |
| Base 6 | 331235256 | 331244456 |
| Base 7 | 112651167 | 112655127 |
| Base 8 | 36174158 | 36177158 |
| Base 9 | 17703389 | 17705729 |
| Base 10 | 99098910 | 99118110 |
| Base 11 | 6175aa11 | 61776411 |
| Base 12 | 3b95a512 | 3b972512 |
| Base 13 | 2890ac13 | 2891c913 |
| Base 14 | 1bb20d14 | 1bb30914 |
| Base 15 | 14895e15 | 148a3b15 |
| Base 16 | f1f0d16 | f1fcd16 |