Compare 18131 vs 18137
| Property | 18131 | 18137 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 181311 | 71 × 25911 |
| Prime factorization | 18131 | 7 × 2591 |
| Divisors count | 2 | 4 |
| Divisors | 1, 18131 | 1, 7, 2591, 18137 |
| Number of properties | 6 | 1 |
| Chen primes | 1032nd | |
| Cousin primes (2nd member) | 324th | |
| Primes | 2078th | |
| Prime triplets (2nd member) | 157th | |
| Semiprimes | 4622nd | |
| Sophie germain primes | 301st | |
| Twin primes (1st member) | 320th | |
| Roman numberals | ||
| Base 2 | 1000110110100112 | 1000110110110012 |
| Base 3 | 2202121123 | 2202122023 |
| Base 4 | 101231034 | 101231214 |
| Base 5 | 10400115 | 10400225 |
| Base 6 | 2155356 | 2155456 |
| Base 7 | 1036017 | 1036107 |
| Base 8 | 433238 | 433318 |
| Base 9 | 267759 | 267829 |
| Base 10 | 1813110 | 1813710 |
| Base 11 | 1269311 | 1269911 |
| Base 12 | a5ab12 | a5b512 |
| Base 13 | 833913 | 834213 |
| Base 14 | 687114 | 687714 |
| Base 15 | 558b15 | 559215 |
| Base 16 | 46d316 | 46d916 |