Compare 991 vs 2371
| Property | 991 | 2371 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 9911 | 23711 |
| Prime factorization | 991 | 2371 |
| Divisors count | 2 | 2 |
| Divisors | 1, 991 | 1, 2371 |
| Number of properties | 10 | 9 |
| Additive primes | 89th | 185th |
| Chen primes | 115th | |
| Emirps | 36th | |
| Harmonic primes | 131st | |
| Isolated primes | 98th | 210th |
| Long primes | 137th | |
| Lucky primes | 42nd | |
| Primes | 167th | 351st |
| Sexy primes (1st member) | 74th | 144th |
| Sexy prime quadrupletss (1st member) | 13th | |
| Sexy prime triplets (1st member) | 53rd | |
| Solinas primes | 43rd | |
| Super primes | 39th | |
| Ulam primes | 18th | 26th |
| Roman numberals | CMXCI | MMCCCLXXI |
| Base 2 | 11110111112 | 1001010000112 |
| Base 3 | 11002013 | 100202113 |
| Base 4 | 331334 | 2110034 |
| Base 5 | 124315 | 334415 |
| Base 6 | 43316 | 145516 |
| Base 7 | 26147 | 66257 |
| Base 8 | 17378 | 45038 |
| Base 9 | 13219 | 32249 |
| Base 10 | 99110 | 237110 |
| Base 11 | 82111 | 186611 |
| Base 12 | 6a712 | 145712 |
| Base 13 | 5b313 | 110513 |
| Base 14 | 50b14 | c1514 |
| Base 15 | 46115 | a8115 |
| Base 16 | 3df16 | 94316 |