Compare 20639 vs 21283
| Property | 20639 | 21283 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 206391 | 212831 |
| Prime factorization | 20639 | 21283 |
| Divisors count | 2 | 2 |
| Divisors | 1, 20639 | 1, 21283 |
| Number of properties | 4 | 5 |
| Chen primes | 1143rd | |
| Happy primes | 384th | 395th |
| Isolated primes | 1670th | |
| Left-truncatable primes | 170th | |
| Primes | 2326th | 2391st |
| Sexy primes (2nd member) | 724th | |
| Twin primes (1st member) | 351st | |
| Roman numberals | ||
| Base 2 | 1010000100111112 | 1010011001000112 |
| Base 3 | 10010221023 | 10020120213 |
| Base 4 | 110021334 | 110302034 |
| Base 5 | 11300245 | 11401135 |
| Base 6 | 2353156 | 2423116 |
| Base 7 | 1141137 | 1160237 |
| Base 8 | 502378 | 514438 |
| Base 9 | 312729 | 321679 |
| Base 10 | 2063910 | 2128310 |
| Base 11 | 1456311 | 14a9911 |
| Base 12 | bb3b12 | 1039712 |
| Base 13 | 951813 | 98c213 |
| Base 14 | 774314 | 7a8314 |
| Base 15 | 61ae15 | 648d15 |
| Base 16 | 509f16 | 532316 |