Compare 991969 vs 991981
| Property | 991969 | 991981 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 111 × 311 × 29091 | 9919811 |
| Prime factorization | 11 × 31 × 2909 | 991981 |
| Divisors count | 8 | 2 |
| Divisors | 1, 11, 31, 341, 2909, 31999, 90179, 991969 | 1, 991981 |
| Number of properties | 0 | 6 |
| Additive primes | 29905th | |
| Chen primes | 29751st | |
| Emirps | 10998th | |
| Primes | 77925th | |
| Sexy primes (1st member) | 16280th | |
| Twin primes (2nd member) | 8113th | |
| Roman numberals | ||
| Base 2 | 111100100010111000012 | 111100100010111011012 |
| Base 3 | 12121012011213 | 12121012020013 |
| Base 4 | 33020232014 | 33020232314 |
| Base 5 | 2232203345 | 2232204115 |
| Base 6 | 331322416 | 331323016 |
| Base 7 | 113010167 | 113010347 |
| Base 8 | 36213418 | 36213558 |
| Base 9 | 17716479 | 17716619 |
| Base 10 | 99196910 | 99198110 |
| Base 11 | 61831011 | 61832111 |
| Base 12 | 3ba08112 | 3ba09112 |
| Base 13 | 28968413 | 28969313 |
| Base 14 | 1bb70d14 | 1bb71b14 |
| Base 15 | 148db415 | 148dc115 |
| Base 16 | f22e116 | f22ed16 |