Compare 21247 vs 21283
| Property | 21247 | 21283 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 212471 | 212831 |
| Prime factorization | 21247 | 21283 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21247 | 1, 21283 |
| Number of properties | 3 | 5 |
| Happy primes | 395th | |
| Isolated primes | 1667th | 1670th |
| Left-truncatable primes | 170th | |
| Long primes | 907th | |
| Primes | 2388th | 2391st |
| Sexy primes (2nd member) | 724th | |
| Roman numberals | ||
| Base 2 | 1010010111111112 | 1010011001000112 |
| Base 3 | 10020102213 | 10020120213 |
| Base 4 | 110233334 | 110302034 |
| Base 5 | 11344425 | 11401135 |
| Base 6 | 2422116 | 2423116 |
| Base 7 | 1156427 | 1160237 |
| Base 8 | 513778 | 514438 |
| Base 9 | 321279 | 321679 |
| Base 10 | 2124710 | 2128310 |
| Base 11 | 14a6611 | 14a9911 |
| Base 12 | 1036712 | 1039712 |
| Base 13 | 989513 | 98c213 |
| Base 14 | 7a5914 | 7a8314 |
| Base 15 | 646715 | 648d15 |
| Base 16 | 52ff16 | 532316 |