Compare 401809 vs 401815
| Property | 401809 | 401815 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 4018091 | 51 × 803631 |
| Prime factorization | 401809 | 5 × 80363 |
| Divisors count | 2 | 4 |
| Divisors | 1, 401809 | 1, 5, 80363, 401815 |
| Number of properties | 3 | 1 |
| Cousin primes (1st member) | 3822nd | |
| Isolated primes | 26358th | |
| Primes | 33985th | |
| Semiprimes | 87947th | |
| Roman numberals | ||
| Base 2 | 11000100001100100012 | 11000100001100101112 |
| Base 3 | 2021020112113 | 2021020120013 |
| Base 4 | 12020121014 | 12020121134 |
| Base 5 | 1003242145 | 1003242305 |
| Base 6 | 123401216 | 123401316 |
| Base 7 | 32623127 | 32623217 |
| Base 8 | 14206218 | 14206278 |
| Base 9 | 6721549 | 6721619 |
| Base 10 | 40180910 | 40181510 |
| Base 11 | 25498111 | 25498711 |
| Base 12 | 17464112 | 17464712 |
| Base 13 | 110b7513 | 110b7b13 |
| Base 14 | a660914 | a661114 |
| Base 15 | 7e0c415 | 7e0ca15 |
| Base 16 | 6219116 | 6219716 |