Compare 21130 vs 21139
| Property | 21130 | 21139 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 21 × 51 × 21131 | 211391 |
| Prime factorization | 2 × 5 × 2113 | 21139 |
| Divisors count | 8 | 2 |
| Divisors | 1, 2, 5, 10, 2113, 4226, 10565, 21130 | 1, 21139 |
| Number of properties | 0 | 5 |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Isolated primes | 1656th | |
| Lucky primes | 385th | |
| Primes | 2375th | |
| Roman numberals | ||
| Base 2 | 1010010100010102 | 1010010100100112 |
| Base 3 | 10012221213 | 10012222213 |
| Base 4 | 110220224 | 110221034 |
| Base 5 | 11340105 | 11340245 |
| Base 6 | 2414546 | 2415116 |
| Base 7 | 1154147 | 1154267 |
| Base 8 | 512128 | 512238 |
| Base 9 | 318779 | 318879 |
| Base 10 | 2113010 | 2113910 |
| Base 11 | 1496a11 | 1497811 |
| Base 12 | 1028a12 | 1029712 |
| Base 13 | 980513 | 981113 |
| Base 14 | 79b414 | 79bd14 |
| Base 15 | 63da15 | 63e415 |
| Base 16 | 528a16 | 529316 |