Compare 28115 vs 28123
| Property | 28115 | 28123 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 56231 | 281231 |
| Prime factorization | 5 × 5623 | 28123 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 5623, 28115 | 1, 28123 |
| Number of properties | 1 | 4 |
| Happy primes | 495th | |
| Isolated primes | 2174th | |
| Lucky primes | 479th | |
| Primes | 3069th | |
| Semiprimes | 7008th | |
| Roman numberals | ||
| Base 2 | 1101101110100112 | 1101101110110112 |
| Base 3 | 11021200223 | 11021201213 |
| Base 4 | 123131034 | 123131234 |
| Base 5 | 13444305 | 13444435 |
| Base 6 | 3340556 | 3341116 |
| Base 7 | 1446537 | 1446647 |
| Base 8 | 667238 | 667338 |
| Base 9 | 425089 | 425179 |
| Base 10 | 2811510 | 2812310 |
| Base 11 | 1a13a11 | 1a14711 |
| Base 12 | 1432b12 | 1433712 |
| Base 13 | ca4913 | ca5413 |
| Base 14 | a36314 | a36b14 |
| Base 15 | 84e515 | 84ed15 |
| Base 16 | 6dd316 | 6ddb16 |