Compare 21389 vs 21401
| Property | 21389 | 21401 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 731 × 2931 | 214011 |
| Prime factorization | 73 × 293 | 21401 |
| Divisors count | 4 | 2 |
| Divisors | 1, 73, 293, 21389 | 1, 21401 |
| Number of properties | 1 | 6 |
| Chen primes | 1179th | |
| Cousin primes (2nd member) | 365th | |
| Isolated primes | 1678th | |
| Primes | 2403rd | |
| Pythagorean primes | 1192nd | |
| Semiprimes | 5420th | |
| Sexy primes (1st member) | 730th | |
| Roman numberals | ||
| Base 2 | 1010011100011012 | 1010011100110012 |
| Base 3 | 10021000123 | 10021001223 |
| Base 4 | 110320314 | 110321214 |
| Base 5 | 11410245 | 11411015 |
| Base 6 | 2430056 | 2430256 |
| Base 7 | 1162347 | 1162527 |
| Base 8 | 516158 | 516318 |
| Base 9 | 323059 | 323189 |
| Base 10 | 2138910 | 2140110 |
| Base 11 | 1508511 | 1509611 |
| Base 12 | 1046512 | 1047512 |
| Base 13 | 997413 | 998313 |
| Base 14 | 7b1b14 | 7b2914 |
| Base 15 | 650e15 | 651b15 |
| Base 16 | 538d16 | 539916 |