Compare 1630 vs 1639
| Property | 1630 | 1639 | 
|---|---|---|
| Type | composite number | semiprime | 
| Unique factors | 3 | 2 | 
| Total factors | 3 | 2 | 
| Prime factorization | 21 × 51 × 1631 | 111 × 1491 | 
| Prime factorization | 2 × 5 × 163 | 11 × 149 | 
| Divisors count | 8 | 4 | 
| Divisors | 1, 2, 5, 10, 163, 326, 815, 1630 | 1, 11, 149, 1639 | 
| Number of properties | 0 | 1 | 
| Semiprimes | 469th | |
| Roman numberals | MDCXXX | MDCXXXIX | 
| Base 2 | 110010111102 | 110011001112 | 
| Base 3 | 20201013 | 20202013 | 
| Base 4 | 1211324 | 1212134 | 
| Base 5 | 230105 | 230245 | 
| Base 6 | 113146 | 113316 | 
| Base 7 | 45167 | 45317 | 
| Base 8 | 31368 | 31478 | 
| Base 9 | 22119 | 22219 | 
| Base 10 | 163010 | 163910 | 
| Base 11 | 125211 | 126011 | 
| Base 12 | b3a12 | b4712 | 
| Base 13 | 98513 | 99113 | 
| Base 14 | 84614 | 85114 | 
| Base 15 | 73a15 | 74415 | 
| Base 16 | 65e16 | 66716 |