Compare 21407 vs 21415
| Property | 21407 | 21415 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 214071 | 51 × 42831 |
| Prime factorization | 21407 | 5 × 4283 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21407 | 1, 5, 4283, 21415 |
| Number of properties | 6 | 1 |
| Chen primes | 1180th | |
| Happy primes | 398th | |
| Isolated primes | 1679th | |
| Long primes | 911th | |
| Primes | 2404th | |
| Semiprimes | 5423rd | |
| Sexy primes (2nd member) | 730th | |
| Roman numberals | ||
| Base 2 | 1010011100111112 | 1010011101001112 |
| Base 3 | 10021002123 | 10021010113 |
| Base 4 | 110321334 | 110322134 |
| Base 5 | 11411125 | 11411305 |
| Base 6 | 2430356 | 2430516 |
| Base 7 | 1162617 | 1163027 |
| Base 8 | 516378 | 516478 |
| Base 9 | 323259 | 323349 |
| Base 10 | 2140710 | 2141510 |
| Base 11 | 150a111 | 150a911 |
| Base 12 | 1047b12 | 1048712 |
| Base 13 | 998913 | 999413 |
| Base 14 | 7b3114 | 7b3914 |
| Base 15 | 652215 | 652a15 |
| Base 16 | 539f16 | 53a716 |