Compare 28111 vs 28121
| Property | 28111 | 28121 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 281111 | 611 × 4611 |
| Prime factorization | 28111 | 61 × 461 |
| Divisors count | 2 | 4 |
| Divisors | 1, 28111 | 1, 61, 461, 28121 |
| Number of properties | 5 | 1 |
| Additive primes | 1404th | |
| Chen primes | 1491st | |
| Harmonic primes | 1144th | |
| Primes | 3068th | |
| Semiprimes | 7010th | |
| Twin primes (2nd member) | 448th | |
| Roman numberals | ||
| Base 2 | 1101101110011112 | 1101101110110012 |
| Base 3 | 11021200113 | 11021201123 |
| Base 4 | 123130334 | 123131214 |
| Base 5 | 13444215 | 13444415 |
| Base 6 | 3340516 | 3341056 |
| Base 7 | 1446467 | 1446627 |
| Base 8 | 667178 | 667318 |
| Base 9 | 425049 | 425159 |
| Base 10 | 2811110 | 2812110 |
| Base 11 | 1a13611 | 1a14511 |
| Base 12 | 1432712 | 1433512 |
| Base 13 | ca4513 | ca5213 |
| Base 14 | a35d14 | a36914 |
| Base 15 | 84e115 | 84eb15 |
| Base 16 | 6dcf16 | 6dd916 |