Compare 21283 vs 21391
| Property | 21283 | 21391 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 212831 | 213911 |
| Prime factorization | 21283 | 21391 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21283 | 1, 21391 |
| Number of properties | 5 | 3 |
| Happy primes | 395th | |
| Isolated primes | 1670th | 1676th |
| Left-truncatable primes | 170th | |
| Primes | 2391st | 2401st |
| Sexy primes (1st member) | 729th | |
| Sexy primes (2nd member) | 724th | |
| Roman numberals | ||
| Base 2 | 1010011001000112 | 1010011100011112 |
| Base 3 | 10020120213 | 10021000213 |
| Base 4 | 110302034 | 110320334 |
| Base 5 | 11401135 | 11410315 |
| Base 6 | 2423116 | 2430116 |
| Base 7 | 1160237 | 1162367 |
| Base 8 | 514438 | 516178 |
| Base 9 | 321679 | 323079 |
| Base 10 | 2128310 | 2139110 |
| Base 11 | 14a9911 | 1508711 |
| Base 12 | 1039712 | 1046712 |
| Base 13 | 98c213 | 997613 |
| Base 14 | 7a8314 | 7b1d14 |
| Base 15 | 648d15 | 651115 |
| Base 16 | 532316 | 538f16 |