Compare 18129 vs 18131
| Property | 18129 | 18131 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 60431 | 181311 |
| Prime factorization | 3 × 6043 | 18131 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 6043, 18129 | 1, 18131 |
| Number of properties | 1 | 6 |
| Chen primes | 1032nd | |
| Cousin primes (2nd member) | 324th | |
| Primes | 2078th | |
| Prime triplets (2nd member) | 157th | |
| Semiprimes | 4620th | |
| Sophie germain primes | 301st | |
| Twin primes (1st member) | 320th | |
| Roman numberals | ||
| Base 2 | 1000110110100012 | 1000110110100112 |
| Base 3 | 2202121103 | 2202121123 |
| Base 4 | 101231014 | 101231034 |
| Base 5 | 10400045 | 10400115 |
| Base 6 | 2155336 | 2155356 |
| Base 7 | 1035667 | 1036017 |
| Base 8 | 433218 | 433238 |
| Base 9 | 267739 | 267759 |
| Base 10 | 1812910 | 1813110 |
| Base 11 | 1269111 | 1269311 |
| Base 12 | a5a912 | a5ab12 |
| Base 13 | 833713 | 833913 |
| Base 14 | 686d14 | 687114 |
| Base 15 | 558915 | 558b15 |
| Base 16 | 46d116 | 46d316 |