Compare 21401 vs 21409
| Property | 21401 | 21409 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 214011 | 791 × 2711 |
| Prime factorization | 21401 | 79 × 271 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21401 | 1, 79, 271, 21409 |
| Number of properties | 6 | 1 |
| Chen primes | 1179th | |
| Cousin primes (2nd member) | 365th | |
| Isolated primes | 1678th | |
| Primes | 2403rd | |
| Pythagorean primes | 1192nd | |
| Semiprimes | 5422nd | |
| Sexy primes (1st member) | 730th | |
| Roman numberals | ||
| Base 2 | 1010011100110012 | 1010011101000012 |
| Base 3 | 10021001223 | 10021002213 |
| Base 4 | 110321214 | 110322014 |
| Base 5 | 11411015 | 11411145 |
| Base 6 | 2430256 | 2430416 |
| Base 7 | 1162527 | 1162637 |
| Base 8 | 516318 | 516418 |
| Base 9 | 323189 | 323279 |
| Base 10 | 2140110 | 2140910 |
| Base 11 | 1509611 | 150a311 |
| Base 12 | 1047512 | 1048112 |
| Base 13 | 998313 | 998b13 |
| Base 14 | 7b2914 | 7b3314 |
| Base 15 | 651b15 | 652415 |
| Base 16 | 539916 | 53a116 |