Compare 1639 vs 1641
| Property | 1639 | 1641 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 1491 | 31 × 5471 |
| Prime factorization | 11 × 149 | 3 × 547 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 149, 1639 | 1, 3, 547, 1641 |
| Number of properties | 1 | 1 |
| Semiprimes | 469th | 470th |
| Roman numberals | MDCXXXIX | MDCXLI |
| Base 2 | 110011001112 | 110011010012 |
| Base 3 | 20202013 | 20202103 |
| Base 4 | 1212134 | 1212214 |
| Base 5 | 230245 | 230315 |
| Base 6 | 113316 | 113336 |
| Base 7 | 45317 | 45337 |
| Base 8 | 31478 | 31518 |
| Base 9 | 22219 | 22239 |
| Base 10 | 163910 | 164110 |
| Base 11 | 126011 | 126211 |
| Base 12 | b4712 | b4912 |
| Base 13 | 99113 | 99313 |
| Base 14 | 85114 | 85314 |
| Base 15 | 74415 | 74615 |
| Base 16 | 66716 | 66916 |