Compare 405985 vs 405989
| Property | 405985 | 405989 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 811971 | 4059891 |
| Prime factorization | 5 × 81197 | 405989 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 81197, 405985 | 1, 405989 |
| Number of properties | 1 | 4 |
| Chen primes | 13833rd | |
| Primes | 34303rd | |
| Semiprimes | 88832nd | |
| Super primes | 3666th | |
| Twin primes (1st member) | 3858th | |
| Roman numberals | ||
| Base 2 | 11000110001111000012 | 11000110001111001012 |
| Base 3 | 2021212201113 | 2021212201223 |
| Base 4 | 12030132014 | 12030132114 |
| Base 5 | 1004424205 | 1004424245 |
| Base 6 | 124113216 | 124113256 |
| Base 7 | 33104267 | 33104337 |
| Base 8 | 14307418 | 14307458 |
| Base 9 | 6778149 | 6778189 |
| Base 10 | 40598510 | 40598910 |
| Base 11 | 25802811 | 25803111 |
| Base 12 | 176b4112 | 176b4512 |
| Base 13 | 112a3813 | 112a3c13 |
| Base 14 | a7d4d14 | a7d5314 |
| Base 15 | 8045a15 | 8045e15 |
| Base 16 | 631e116 | 631e516 |