Compare 280013 vs 280018
| Property | 280013 | 280018 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2800131 | 21 × 1400091 |
| Prime factorization | 280013 | 2 × 140009 |
| Divisors count | 2 | 4 |
| Divisors | 1, 280013 | 1, 2, 140009, 280018 |
| Number of properties | 5 | 1 |
| Chen primes | 10056th | |
| Cousin primes (2nd member) | 2812th | |
| Harmonic primes | 9123rd | |
| Isolated primes | 18766th | |
| Primes | 24435th | |
| Semiprimes | 62344th | |
| Roman numberals | ||
| Base 2 | 10001000101110011012 | 10001000101110100102 |
| Base 3 | 1120200022123 | 1120200100013 |
| Base 4 | 10101130314 | 10101131024 |
| Base 5 | 324300235 | 324300335 |
| Base 6 | 100002056 | 100002146 |
| Base 7 | 22442367 | 22442447 |
| Base 8 | 10427158 | 10427228 |
| Base 9 | 4660859 | 4661019 |
| Base 10 | 28001310 | 28001810 |
| Base 11 | 18141811 | 18142211 |
| Base 12 | 11606512 | 11606a12 |
| Base 13 | 9a5b613 | 9a5bb13 |
| Base 14 | 7408d14 | 7409414 |
| Base 15 | 57e7815 | 57e7d15 |
| Base 16 | 445cd16 | 445d216 |