Compare 991 vs 1153
| Property | 991 | 1153 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 9911 | 11531 |
| Prime factorization | 991 | 1153 |
| Divisors count | 2 | 2 |
| Divisors | 1, 991 | 1, 1153 |
| Number of properties | 10 | 9 |
| Additive primes | 89th | |
| Chen primes | 115th | |
| Emirps | 36th | 48th |
| Isolated primes | 98th | |
| Long primes | 72nd | |
| Lucky primes | 42nd | |
| Pierpont primes | 19th | |
| Primes | 167th | 191st |
| Proth primes | 18th | |
| Pythagorean primes | 93rd | |
| Sexy primes (1st member) | 74th | |
| Solinas primes | 43rd | 52nd |
| Super primes | 39th | 43rd |
| Twin primes (2nd member) | 41st | |
| Ulam primes | 18th | |
| Roman numberals | CMXCI | MCLIII |
| Base 2 | 11110111112 | 100100000012 |
| Base 3 | 11002013 | 11202013 |
| Base 4 | 331334 | 1020014 |
| Base 5 | 124315 | 141035 |
| Base 6 | 43316 | 52016 |
| Base 7 | 26147 | 32357 |
| Base 8 | 17378 | 22018 |
| Base 9 | 13219 | 15219 |
| Base 10 | 99110 | 115310 |
| Base 11 | 82111 | 95911 |
| Base 12 | 6a712 | 80112 |
| Base 13 | 5b313 | 6a913 |
| Base 14 | 50b14 | 5c514 |
| Base 15 | 46115 | 51d15 |
| Base 16 | 3df16 | 48116 |