Compare 21998 vs 21999
| Property | 21998 | 21999 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 171 × 6471 | 31 × 73331 |
| Prime factorization | 2 × 17 × 647 | 3 × 7333 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 17, 34, 647, 1294, 10999, 21998 | 1, 3, 7333, 21999 |
| Number of properties | 0 | 1 |
| Semiprimes | 5554th | |
| Roman numberals | ||
| Base 2 | 1010101111011102 | 1010101111011112 |
| Base 3 | 10100112023 | 10100112103 |
| Base 4 | 111132324 | 111132334 |
| Base 5 | 12004435 | 12004445 |
| Base 6 | 2455026 | 2455036 |
| Base 7 | 1210647 | 1210657 |
| Base 8 | 527568 | 527578 |
| Base 9 | 331529 | 331539 |
| Base 10 | 2199810 | 2199910 |
| Base 11 | 1558911 | 1558a11 |
| Base 12 | 1089212 | 1089312 |
| Base 13 | a02213 | a02313 |
| Base 14 | 803414 | 803514 |
| Base 15 | 67b815 | 67b915 |
| Base 16 | 55ee16 | 55ef16 |