Compare 128278 vs 128287
| Property | 128278 | 128287 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 311 × 20691 | 1282871 |
| Prime factorization | 2 × 31 × 2069 | 128287 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 31, 62, 2069, 4138, 64139, 128278 | 1, 128287 |
| Number of properties | 0 | 5 |
| Cousin primes (1st member) | 1492nd | |
| Good primes | 785th | |
| Isolated primes | 9016th | |
| Long primes | 4508th | |
| Primes | 12009th | |
| Roman numberals | ||
| Base 2 | 111110101000101102 | 111110101000111112 |
| Base 3 | 201112220013 | 201112221013 |
| Base 4 | 1331101124 | 1331101334 |
| Base 5 | 131011035 | 131011225 |
| Base 6 | 24255146 | 24255316 |
| Base 7 | 10426637 | 10430057 |
| Base 8 | 3724268 | 3724378 |
| Base 9 | 2148619 | 2148719 |
| Base 10 | 12827810 | 12828710 |
| Base 11 | 8841711 | 8842511 |
| Base 12 | 6229a12 | 622a712 |
| Base 13 | 4650713 | 4651313 |
| Base 14 | 34a6a14 | 34a7514 |
| Base 15 | 2801d15 | 2802715 |
| Base 16 | 1f51616 | 1f51f16 |