Compare 145721 vs 145726
| Property | 145721 | 145726 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 1457211 | 21 × 72 × 14871 |
| Prime factorization | 145721 | 2 × 7 × 7 × 1487 |
| Divisors count | 2 | 12 |
| Divisors | 1, 145721 | 1, 2, 7, 14, 49, 98, 1487, 2974, 10409, 20818, 72863, 145726 |
| Number of properties | 8 | 0 |
| Chen primes | 5795th | |
| Emirps | 2847th | |
| Harmonic primes | 5062nd | |
| Primes | 13484th | |
| Pythagorean primes | 6721st | |
| Sophie germain primes | 1600th | |
| Twin primes (1st member) | 1656th | |
| Ulam primes | 957th | |
| Roman numberals | ||
| Base 2 | 1000111001001110012 | 1000111001001111102 |
| Base 3 | 211012200023 | 211012200213 |
| Base 4 | 2032103214 | 2032103324 |
| Base 5 | 141303415 | 141304015 |
| Base 6 | 30423456 | 30423546 |
| Base 7 | 11445627 | 11446007 |
| Base 8 | 4344718 | 4344768 |
| Base 9 | 2418029 | 2418079 |
| Base 10 | 14572110 | 14572610 |
| Base 11 | 9a53411 | 9a53911 |
| Base 12 | 703b512 | 703ba12 |
| Base 13 | 5143413 | 5143913 |
| Base 14 | 3b16914 | 3b17014 |
| Base 15 | 2d29b15 | 2d2a115 |
| Base 16 | 2393916 | 2393e16 |