Compare 642989 vs 642991
| Property | 642989 | 642991 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 6311 × 10191 | 171 × 1091 × 3471 |
| Prime factorization | 631 × 1019 | 17 × 109 × 347 |
| Divisors count | 4 | 8 |
| Divisors | 1, 631, 1019, 642989 | 1, 17, 109, 347, 1853, 5899, 37823, 642991 |
| Number of properties | 1 | 0 |
| Semiprimes | 137768th | |
| Roman numberals | ||
| Base 2 | 100111001111101011012 | 100111001111101011112 |
| Base 3 | 10122000001023 | 10122000001113 |
| Base 4 | 21303322314 | 21303322334 |
| Base 5 | 1310334245 | 1310334315 |
| Base 6 | 214404456 | 214404516 |
| Base 7 | 53154147 | 53154167 |
| Base 8 | 23476558 | 23476578 |
| Base 9 | 11800129 | 11800149 |
| Base 10 | 64298910 | 64299110 |
| Base 11 | 3aa0a611 | 3aa0a811 |
| Base 12 | 27012512 | 27012712 |
| Base 13 | 19688913 | 19688b13 |
| Base 14 | 12a47b14 | 12a47d14 |
| Base 15 | ca7ae15 | ca7b115 |
| Base 16 | 9cfad16 | 9cfaf16 |