Compare 40009 vs 40021
| Property | 40009 | 40021 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 400091 | 311 × 12911 |
| Prime factorization | 40009 | 31 × 1291 |
| Divisors count | 2 | 4 |
| Divisors | 1, 40009 | 1, 31, 1291, 40021 |
| Number of properties | 7 | 1 |
| Additive primes | 1881st | |
| Chen primes | 1976th | |
| Cousin primes (1st member) | 582nd | |
| Happy primes | 688th | |
| Isolated primes | 3023rd | |
| Primes | 4204th | |
| Pythagorean primes | 2086th | |
| Semiprimes | 9796th | |
| Roman numberals | ||
| Base 2 | 10011100010010012 | 10011100010101012 |
| Base 3 | 20002122113 | 20002200213 |
| Base 4 | 213010214 | 213011114 |
| Base 5 | 22400145 | 22400415 |
| Base 6 | 5051216 | 5051416 |
| Base 7 | 2244347 | 2244527 |
| Base 8 | 1161118 | 1161258 |
| Base 9 | 607849 | 608079 |
| Base 10 | 4000910 | 4002110 |
| Base 11 | 2807211 | 2808311 |
| Base 12 | 1b1a112 | 1b1b112 |
| Base 13 | 1529813 | 152a713 |
| Base 14 | 1081b14 | 1082914 |
| Base 15 | bcc415 | bcd115 |
| Base 16 | 9c4916 | 9c5516 |