Compare 28123 vs 28129
| Property | 28123 | 28129 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 281231 | 231 × 12231 |
| Prime factorization | 28123 | 23 × 1223 |
| Divisors count | 2 | 4 |
| Divisors | 1, 28123 | 1, 23, 1223, 28129 |
| Number of properties | 4 | 1 |
| Happy primes | 495th | |
| Isolated primes | 2174th | |
| Lucky primes | 479th | |
| Primes | 3069th | |
| Semiprimes | 7012th | |
| Roman numberals | ||
| Base 2 | 1101101110110112 | 1101101111000012 |
| Base 3 | 11021201213 | 11021202113 |
| Base 4 | 123131234 | 123132014 |
| Base 5 | 13444435 | 14000045 |
| Base 6 | 3341116 | 3341216 |
| Base 7 | 1446647 | 1450037 |
| Base 8 | 667338 | 667418 |
| Base 9 | 425179 | 425249 |
| Base 10 | 2812310 | 2812910 |
| Base 11 | 1a14711 | 1a15211 |
| Base 12 | 1433712 | 1434112 |
| Base 13 | ca5413 | ca5a13 |
| Base 14 | a36b14 | a37314 |
| Base 15 | 84ed15 | 850415 |
| Base 16 | 6ddb16 | 6de116 |