Compare 21247 vs 21407
| Property | 21247 | 21407 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 212471 | 214071 |
| Prime factorization | 21247 | 21407 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21247 | 1, 21407 |
| Number of properties | 3 | 6 |
| Chen primes | 1180th | |
| Happy primes | 398th | |
| Isolated primes | 1667th | 1679th |
| Long primes | 907th | 911th |
| Primes | 2388th | 2404th |
| Sexy primes (2nd member) | 730th | |
| Roman numberals | ||
| Base 2 | 1010010111111112 | 1010011100111112 |
| Base 3 | 10020102213 | 10021002123 |
| Base 4 | 110233334 | 110321334 |
| Base 5 | 11344425 | 11411125 |
| Base 6 | 2422116 | 2430356 |
| Base 7 | 1156427 | 1162617 |
| Base 8 | 513778 | 516378 |
| Base 9 | 321279 | 323259 |
| Base 10 | 2124710 | 2140710 |
| Base 11 | 14a6611 | 150a111 |
| Base 12 | 1036712 | 1047b12 |
| Base 13 | 989513 | 998913 |
| Base 14 | 7a5914 | 7b3114 |
| Base 15 | 646715 | 652215 |
| Base 16 | 52ff16 | 539f16 |