Compare 503 vs 991
| Property | 503 | 991 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 5031 | 9911 |
| Prime factorization | 503 | 991 |
| Divisors count | 2 | 2 |
| Divisors | 1, 503 | 1, 991 |
| Number of properties | 9 | 10 |
| Additive primes | 89th | |
| Chen primes | 68th | 115th |
| Cousin primes (2nd member) | 27th | |
| Emirps | 36th | |
| Harmonic primes | 40th | |
| Isolated primes | 49th | 98th |
| Long primes | 36th | |
| Lucky primes | 42nd | |
| Primes | 96th | 167th |
| Safe primes | 18th | |
| Sexy primes (1st member) | 47th | 74th |
| Solinas primes | 37th | 43rd |
| Super primes | 39th | |
| Ulam primes | 18th | |
| Roman numberals | DIII | CMXCI |
| Base 2 | 1111101112 | 11110111112 |
| Base 3 | 2001223 | 11002013 |
| Base 4 | 133134 | 331334 |
| Base 5 | 40035 | 124315 |
| Base 6 | 21556 | 43316 |
| Base 7 | 13167 | 26147 |
| Base 8 | 7678 | 17378 |
| Base 9 | 6189 | 13219 |
| Base 10 | 50310 | 99110 |
| Base 11 | 41811 | 82111 |
| Base 12 | 35b12 | 6a712 |
| Base 13 | 2c913 | 5b313 |
| Base 14 | 27d14 | 50b14 |
| Base 15 | 23815 | 46115 |
| Base 16 | 1f716 | 3df16 |