Compare 1644 vs 1651
| Property | 1644 | 1651 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 31 × 1371 | 131 × 1271 |
| Prime factorization | 2 × 2 × 3 × 137 | 13 × 127 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 3, 4, 6, 12, 137, 274, 411, 548, 822, 1644 | 1, 13, 127, 1651 |
| Number of properties | 0 | 1 |
| Semiprimes | 475th | |
| Roman numberals | MDCXLIV | MDCLI |
| Base 2 | 110011011002 | 110011100112 |
| Base 3 | 20202203 | 20210113 |
| Base 4 | 1212304 | 1213034 |
| Base 5 | 230345 | 231015 |
| Base 6 | 113406 | 113516 |
| Base 7 | 45367 | 45467 |
| Base 8 | 31548 | 31638 |
| Base 9 | 22269 | 22349 |
| Base 10 | 164410 | 165110 |
| Base 11 | 126511 | 127111 |
| Base 12 | b5012 | b5712 |
| Base 13 | 99613 | 9a013 |
| Base 14 | 85614 | 85d14 |
| Base 15 | 74915 | 75115 |
| Base 16 | 66c16 | 67316 |