Compare 1639 vs 1644
| Property | 1639 | 1644 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 4 |
| Prime factorization | 111 × 1491 | 22 × 31 × 1371 |
| Prime factorization | 11 × 149 | 2 × 2 × 3 × 137 |
| Divisors count | 4 | 12 |
| Divisors | 1, 11, 149, 1639 | 1, 2, 3, 4, 6, 12, 137, 274, 411, 548, 822, 1644 |
| Number of properties | 1 | 0 |
| Semiprimes | 469th | |
| Roman numberals | MDCXXXIX | MDCXLIV |
| Base 2 | 110011001112 | 110011011002 |
| Base 3 | 20202013 | 20202203 |
| Base 4 | 1212134 | 1212304 |
| Base 5 | 230245 | 230345 |
| Base 6 | 113316 | 113406 |
| Base 7 | 45317 | 45367 |
| Base 8 | 31478 | 31548 |
| Base 9 | 22219 | 22269 |
| Base 10 | 163910 | 164410 |
| Base 11 | 126011 | 126511 |
| Base 12 | b4712 | b5012 |
| Base 13 | 99113 | 99613 |
| Base 14 | 85114 | 85614 |
| Base 15 | 74415 | 74915 |
| Base 16 | 66716 | 66c16 |