Compare 998 vs 999
| Property | 998 | 999 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 4 |
| Prime factorization | 21 × 4991 | 33 × 371 |
| Prime factorization | 2 × 499 | 3 × 3 × 3 × 37 |
| Divisors count | 4 | 8 |
| Divisors | 1, 2, 499, 998 | 1, 3, 9, 27, 37, 111, 333, 999 |
| Number of properties | 1 | 0 |
| Semiprimes | 299th | |
| Roman numberals | CMXCVIII | CMXCIX |
| Base 2 | 11111001102 | 11111001112 |
| Base 3 | 11002223 | 11010003 |
| Base 4 | 332124 | 332134 |
| Base 5 | 124435 | 124445 |
| Base 6 | 43426 | 43436 |
| Base 7 | 26247 | 26257 |
| Base 8 | 17468 | 17478 |
| Base 9 | 13289 | 13309 |
| Base 10 | 99810 | 99910 |
| Base 11 | 82811 | 82911 |
| Base 12 | 6b212 | 6b312 |
| Base 13 | 5ba13 | 5bb13 |
| Base 14 | 51414 | 51514 |
| Base 15 | 46815 | 46915 |
| Base 16 | 3e616 | 3e716 |