Compare 989990 vs 990001
| Property | 989990 | 990001 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 51 × 989991 | 9900011 |
| Prime factorization | 2 × 5 × 98999 | 990001 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 5, 10, 98999, 197998, 494995, 989990 | 1, 990001 |
| Number of properties | 0 | 3 |
| Additive primes | 29855th | |
| Primes | 77778th | |
| Twin primes (2nd member) | 8102nd | |
| Roman numberals | ||
| Base 2 | 111100011011001001102 | 111100011011001100012 |
| Base 3 | 12120220000223 | 12120220002013 |
| Base 4 | 33012302124 | 33012303014 |
| Base 5 | 2231344305 | 2231400015 |
| Base 6 | 331151426 | 331152016 |
| Base 7 | 112621617 | 112622057 |
| Base 8 | 36154468 | 36154618 |
| Base 9 | 17680089 | 17680219 |
| Base 10 | 98999010 | 99000110 |
| Base 11 | 61688111 | 61689111 |
| Base 12 | 3b8ab212 | 3b8b0112 |
| Base 13 | 2887c113 | 2887cc13 |
| Base 14 | 1baad814 | 1bab0514 |
| Base 15 | 1484e515 | 14850115 |
| Base 16 | f1b2616 | f1b3116 |