Compare 661981 vs 661989
| Property | 661981 | 661989 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 1031 × 64271 | 31 × 2206631 |
| Prime factorization | 103 × 6427 | 3 × 220663 |
| Divisors count | 4 | 4 |
| Divisors | 1, 103, 6427, 661981 | 1, 3, 220663, 661989 |
| Number of properties | 1 | 1 |
| Semiprimes | 141648th | 141649th |
| Roman numberals | ||
| Base 2 | 101000011001110111012 | 101000011001111001012 |
| Base 3 | 10201220012113 | 10201220020103 |
| Base 4 | 22012131314 | 22012132114 |
| Base 5 | 1321404115 | 1321404245 |
| Base 6 | 221044216 | 221044336 |
| Base 7 | 54246557 | 54246667 |
| Base 8 | 24147358 | 24147458 |
| Base 9 | 12180549 | 12180639 |
| Base 10 | 66198110 | 66198910 |
| Base 11 | 4123a111 | 4123a911 |
| Base 12 | 27b11112 | 27b11912 |
| Base 13 | 1a240813 | 1a241313 |
| Base 14 | 13336514 | 13336d14 |
| Base 15 | d122115 | d122915 |
| Base 16 | a19dd16 | a19e516 |