Compare 21397 vs 21407
| Property | 21397 | 21407 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 213971 | 214071 |
| Prime factorization | 21397 | 21407 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21397 | 1, 21407 |
| Number of properties | 5 | 6 |
| Chen primes | 1180th | |
| Cousin primes (1st member) | 365th | |
| Happy primes | 398th | |
| Isolated primes | 1677th | 1679th |
| Long primes | 911th | |
| Primes | 2402nd | 2404th |
| Pythagorean primes | 1191st | |
| Sexy primes (2nd member) | 729th | 730th |
| Roman numberals | ||
| Base 2 | 1010011100101012 | 1010011100111112 |
| Base 3 | 10021001113 | 10021002123 |
| Base 4 | 110321114 | 110321334 |
| Base 5 | 11410425 | 11411125 |
| Base 6 | 2430216 | 2430356 |
| Base 7 | 1162457 | 1162617 |
| Base 8 | 516258 | 516378 |
| Base 9 | 323149 | 323259 |
| Base 10 | 2139710 | 2140710 |
| Base 11 | 1509211 | 150a111 |
| Base 12 | 1047112 | 1047b12 |
| Base 13 | 997c13 | 998913 |
| Base 14 | 7b2514 | 7b3114 |
| Base 15 | 651715 | 652215 |
| Base 16 | 539516 | 539f16 |