Compare 201991 vs 201999
| Property | 201991 | 201999 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 731 × 27671 | 31 × 71 × 96191 |
| Prime factorization | 73 × 2767 | 3 × 7 × 9619 |
| Divisors count | 4 | 8 |
| Divisors | 1, 73, 2767, 201991 | 1, 3, 7, 21, 9619, 28857, 67333, 201999 |
| Number of properties | 1 | 0 |
| Semiprimes | 45656th | |
| Roman numberals | ||
| Base 2 | 1100010101000001112 | 1100010101000011112 |
| Base 3 | 1010210020113 | 1010210021103 |
| Base 4 | 3011100134 | 3011100334 |
| Base 5 | 224304315 | 224304445 |
| Base 6 | 41550516 | 41551036 |
| Base 7 | 15006167 | 15006307 |
| Base 8 | 6124078 | 6124178 |
| Base 9 | 3370649 | 3370739 |
| Base 10 | 20199110 | 20199910 |
| Base 11 | 12883911 | 12884611 |
| Base 12 | 98a8712 | 98a9312 |
| Base 13 | 70c2a13 | 70c3513 |
| Base 14 | 5387d14 | 5388714 |
| Base 15 | 3ecb115 | 3ecb915 |
| Base 16 | 3150716 | 3150f16 |