Compare 2181 vs 2215
| Property | 2181 | 2215 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 7271 | 51 × 4431 |
| Prime factorization | 3 × 727 | 5 × 443 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 727, 2181 | 1, 5, 443, 2215 |
| Number of properties | 1 | 1 |
| Semiprimes | 623rd | 635th |
| Roman numberals | MMCLXXXI | MMCCXV |
| Base 2 | 1000100001012 | 1000101001112 |
| Base 3 | 22222103 | 100010013 |
| Base 4 | 2020114 | 2022134 |
| Base 5 | 322115 | 323305 |
| Base 6 | 140336 | 141316 |
| Base 7 | 62347 | 63137 |
| Base 8 | 42058 | 42478 |
| Base 9 | 28839 | 30319 |
| Base 10 | 218110 | 221510 |
| Base 11 | 170311 | 173411 |
| Base 12 | 131912 | 134712 |
| Base 13 | cba13 | 101513 |
| Base 14 | b1b14 | b4314 |
| Base 15 | 9a615 | 9ca15 |
| Base 16 | 88516 | 8a716 |