Compare 28009 vs 28019
| Property | 28009 | 28019 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 371 × 7571 | 280191 |
| Prime factorization | 37 × 757 | 28019 |
| Divisors count | 4 | 2 |
| Divisors | 1, 37, 757, 28009 | 1, 28019 |
| Number of properties | 1 | 6 |
| Chen primes | 1487th | |
| Isolated primes | 2166th | |
| Long primes | 1164th | |
| Primes | 3057th | |
| Safe primes | 249th | |
| Semiprimes | 6985th | |
| Sophie germain primes | 425th | |
| Roman numberals | ||
| Base 2 | 1101101011010012 | 1101101011100112 |
| Base 3 | 11021021013 | 11021022023 |
| Base 4 | 123112214 | 123113034 |
| Base 5 | 13440145 | 13440345 |
| Base 6 | 3334016 | 3334156 |
| Base 7 | 1444427 | 1444557 |
| Base 8 | 665518 | 665638 |
| Base 9 | 423719 | 423829 |
| Base 10 | 2800910 | 2801910 |
| Base 11 | 1a05311 | 1a06211 |
| Base 12 | 1426112 | 1426b12 |
| Base 13 | c99713 | c9a413 |
| Base 14 | a2c914 | a2d514 |
| Base 15 | 847415 | 847e15 |
| Base 16 | 6d6916 | 6d7316 |