Compare 20947 vs 21139
| Property | 20947 | 21139 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 209471 | 211391 |
| Prime factorization | 20947 | 21139 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20947 | 1, 21139 |
| Number of properties | 3 | 5 |
| Chen primes | 1160th | |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Isolated primes | 1645th | 1656th |
| Lucky primes | 385th | |
| Primes | 2356th | 2375th |
| Roman numberals | ||
| Base 2 | 1010001110100112 | 1010010100100112 |
| Base 3 | 10012012113 | 10012222213 |
| Base 4 | 110131034 | 110221034 |
| Base 5 | 11322425 | 11340245 |
| Base 6 | 2405516 | 2415116 |
| Base 7 | 1150337 | 1154267 |
| Base 8 | 507238 | 512238 |
| Base 9 | 316549 | 318879 |
| Base 10 | 2094710 | 2113910 |
| Base 11 | 1481311 | 1497811 |
| Base 12 | 1015712 | 1029712 |
| Base 13 | 96c413 | 981113 |
| Base 14 | 78c314 | 79bd14 |
| Base 15 | 631715 | 63e415 |
| Base 16 | 51d316 | 529316 |