Compare 1991 vs 1992
| Property | 1991 | 1992 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 5 |
| Prime factorization | 111 × 1811 | 23 × 31 × 831 |
| Prime factorization | 11 × 181 | 2 × 2 × 2 × 3 × 83 |
| Divisors count | 4 | 16 |
| Divisors | 1, 11, 181, 1991 | 1, 2, 3, 4, 6, 8, 12, 24, 83, 166, 249, 332, 498, 664, 996, 1992 |
| Number of properties | 1 | 0 |
| Semiprimes | 576th | |
| Roman numberals | MCMXCI | MCMXCII |
| Base 2 | 111110001112 | 111110010002 |
| Base 3 | 22012023 | 22012103 |
| Base 4 | 1330134 | 1330204 |
| Base 5 | 304315 | 304325 |
| Base 6 | 131156 | 131206 |
| Base 7 | 55437 | 55447 |
| Base 8 | 37078 | 37108 |
| Base 9 | 26529 | 26539 |
| Base 10 | 199110 | 199210 |
| Base 11 | 155011 | 155111 |
| Base 12 | 119b12 | 11a012 |
| Base 13 | ba213 | ba313 |
| Base 14 | a2314 | a2414 |
| Base 15 | 8cb15 | 8cc15 |
| Base 16 | 7c716 | 7c816 |