Compare 66981 vs 66991
| Property | 66981 | 66991 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 831 × 2691 | 311 × 21611 |
| Prime factorization | 3 × 83 × 269 | 31 × 2161 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 83, 249, 269, 807, 22327, 66981 | 1, 31, 2161, 66991 |
| Number of properties | 0 | 1 |
| Semiprimes | 15995th | |
| Roman numberals | ||
| Base 2 | 100000101101001012 | 100000101101011112 |
| Base 3 | 101012122103 | 101012200113 |
| Base 4 | 1001122114 | 1001122334 |
| Base 5 | 41204115 | 41204315 |
| Base 6 | 12340336 | 12340516 |
| Base 7 | 3661657 | 3662117 |
| Base 8 | 2026458 | 2026578 |
| Base 9 | 1117839 | 1118049 |
| Base 10 | 6698110 | 6699110 |
| Base 11 | 4636211 | 4637111 |
| Base 12 | 3291912 | 3292712 |
| Base 13 | 2464513 | 2465213 |
| Base 14 | 1a5a514 | 1a5b114 |
| Base 15 | 14ca615 | 14cb115 |
| Base 16 | 105a516 | 105af16 |