Compare 12391 vs 18397
| Property | 12391 | 18397 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 123911 | 183971 |
| Prime factorization | 12391 | 18397 |
| Divisors count | 2 | 2 |
| Divisors | 1, 12391 | 1, 18397 |
| Number of properties | 4 | 7 |
| Centered heptagonal primes | 18th | 20th |
| Chen primes | 1043rd | |
| Cousin primes (1st member) | 329th | |
| Isolated primes | 996th | 1462nd |
| Lucky primes | 252nd | 344th |
| Primes | 1479th | 2107th |
| Pythagorean primes | 1042nd | |
| Roman numberals | ||
| Base 2 | 110000011001112 | 1000111110111012 |
| Base 3 | 1212222213 | 2210201013 |
| Base 4 | 30012134 | 101331314 |
| Base 5 | 3440315 | 10420425 |
| Base 6 | 1332116 | 2211016 |
| Base 7 | 510617 | 1044317 |
| Base 8 | 301478 | 437358 |
| Base 9 | 178879 | 272119 |
| Base 10 | 1239110 | 1839710 |
| Base 11 | 934511 | 1290511 |
| Base 12 | 720712 | a79112 |
| Base 13 | 584213 | 84b213 |
| Base 14 | 473114 | 69c114 |
| Base 15 | 3a1115 | 56b715 |
| Base 16 | 306716 | 47dd16 |