Compare 987987 vs 987997
| Property | 987987 | 987997 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 5 | 1 |
| Total factors | 6 | 1 |
| Prime factorization | 31 × 72 × 111 × 131 × 471 | 9879971 |
| Prime factorization | 3 × 7 × 7 × 11 × 13 × 47 | 987997 |
| Divisors count | 48 | 2 |
| Divisors | 1, 3, 7, 11, 13, 21, 33, 39, 47, 49, 77, 91, 141, 143, 147, 231, 273, 329, 429, 517, 539, 611, 637, 987, 1001, 1551, 1617, 1833, 1911, 2303, 3003, 3619, 4277, 6721, 6909, 7007, 10857, 12831, 20163, 21021, 25333, 29939, 47047, 75999, 89817, 141141, 329329, 987987 | 1, 987997 |
| Number of properties | 0 | 5 |
| Chen primes | 29648th | |
| Emirps | 10909th | |
| Isolated primes | 61459th | |
| Primes | 77634th | |
| Sexy primes (2nd member) | 16218th | |
| Roman numberals | ||
| Base 2 | 111100010011010100112 | 111100010011010111012 |
| Base 3 | 12120120210103 | 12120120211113 |
| Base 4 | 33010311034 | 33010311314 |
| Base 5 | 2231034225 | 2231034425 |
| Base 6 | 331020036 | 331020216 |
| Base 7 | 112533007 | 112533137 |
| Base 8 | 36115238 | 36115358 |
| Base 9 | 17652339 | 17652449 |
| Base 10 | 98798710 | 98799710 |
| Base 11 | 61532011 | 61532a11 |
| Base 12 | 3b790312 | 3b791112 |
| Base 13 | 28791013 | 28791a13 |
| Base 14 | 1ba0a714 | 1ba0b314 |
| Base 15 | 147b0c15 | 147b1715 |
| Base 16 | f135316 | f135d16 |