Compare 21401 vs 21405
| Property | 21401 | 21405 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 214011 | 31 × 51 × 14271 |
| Prime factorization | 21401 | 3 × 5 × 1427 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21401 | 1, 3, 5, 15, 1427, 4281, 7135, 21405 |
| Number of properties | 6 | 0 |
| Chen primes | 1179th | |
| Cousin primes (2nd member) | 365th | |
| Isolated primes | 1678th | |
| Primes | 2403rd | |
| Pythagorean primes | 1192nd | |
| Sexy primes (1st member) | 730th | |
| Roman numberals | ||
| Base 2 | 1010011100110012 | 1010011100111012 |
| Base 3 | 10021001223 | 10021002103 |
| Base 4 | 110321214 | 110321314 |
| Base 5 | 11411015 | 11411105 |
| Base 6 | 2430256 | 2430336 |
| Base 7 | 1162527 | 1162567 |
| Base 8 | 516318 | 516358 |
| Base 9 | 323189 | 323239 |
| Base 10 | 2140110 | 2140510 |
| Base 11 | 1509611 | 1509a11 |
| Base 12 | 1047512 | 1047912 |
| Base 13 | 998313 | 998713 |
| Base 14 | 7b2914 | 7b2d14 |
| Base 15 | 651b15 | 652015 |
| Base 16 | 539916 | 539d16 |