Compare 503 vs 513
| Property | 503 | 513 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 4 |
| Prime factorization | 5031 | 33 × 191 |
| Prime factorization | 503 | 3 × 3 × 3 × 19 |
| Divisors count | 2 | 8 |
| Divisors | 1, 503 | 1, 3, 9, 19, 27, 57, 171, 513 |
| Number of properties | 9 | 0 |
| Chen primes | 68th | |
| Cousin primes (2nd member) | 27th | |
| Harmonic primes | 40th | |
| Isolated primes | 49th | |
| Long primes | 36th | |
| Primes | 96th | |
| Safe primes | 18th | |
| Sexy primes (1st member) | 47th | |
| Solinas primes | 37th | |
| Roman numberals | DIII | DXIII |
| Base 2 | 1111101112 | 10000000012 |
| Base 3 | 2001223 | 2010003 |
| Base 4 | 133134 | 200014 |
| Base 5 | 40035 | 40235 |
| Base 6 | 21556 | 22136 |
| Base 7 | 13167 | 13327 |
| Base 8 | 7678 | 10018 |
| Base 9 | 6189 | 6309 |
| Base 10 | 50310 | 51310 |
| Base 11 | 41811 | 42711 |
| Base 12 | 35b12 | 36912 |
| Base 13 | 2c913 | 30613 |
| Base 14 | 27d14 | 28914 |
| Base 15 | 23815 | 24315 |
| Base 16 | 1f716 | 20116 |