Compare 21127 vs 21139
| Property | 21127 | 21139 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 371 × 5711 | 211391 |
| Prime factorization | 37 × 571 | 21139 |
| Divisors count | 4 | 2 |
| Divisors | 1, 37, 571, 21127 | 1, 21139 |
| Number of properties | 1 | 5 |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Isolated primes | 1656th | |
| Lucky primes | 385th | |
| Primes | 2375th | |
| Semiprimes | 5356th | |
| Roman numberals | ||
| Base 2 | 1010010100001112 | 1010010100100112 |
| Base 3 | 10012221113 | 10012222213 |
| Base 4 | 110220134 | 110221034 |
| Base 5 | 11340025 | 11340245 |
| Base 6 | 2414516 | 2415116 |
| Base 7 | 1154117 | 1154267 |
| Base 8 | 512078 | 512238 |
| Base 9 | 318749 | 318879 |
| Base 10 | 2112710 | 2113910 |
| Base 11 | 1496711 | 1497811 |
| Base 12 | 1028712 | 1029712 |
| Base 13 | 980213 | 981113 |
| Base 14 | 79b114 | 79bd14 |
| Base 15 | 63d715 | 63e415 |
| Base 16 | 528716 | 529316 |