Compare 1389 vs 1391
| Property | 1389 | 1391 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 4631 | 131 × 1071 |
| Prime factorization | 3 × 463 | 13 × 107 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 463, 1389 | 1, 13, 107, 1391 |
| Number of properties | 1 | 1 |
| Semiprimes | 411th | 412th |
| Roman numberals | MCCCLXXXIX | MCCCXCI |
| Base 2 | 101011011012 | 101011011112 |
| Base 3 | 12201103 | 12201123 |
| Base 4 | 1112314 | 1112334 |
| Base 5 | 210245 | 210315 |
| Base 6 | 102336 | 102356 |
| Base 7 | 40237 | 40257 |
| Base 8 | 25558 | 25578 |
| Base 9 | 18139 | 18159 |
| Base 10 | 138910 | 139110 |
| Base 11 | 105311 | 105511 |
| Base 12 | 97912 | 97b12 |
| Base 13 | 82b13 | 83013 |
| Base 14 | 71314 | 71514 |
| Base 15 | 62915 | 62b15 |
| Base 16 | 56d16 | 56f16 |