Compare 12391 vs 12409
| Property | 12391 | 12409 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 123911 | 124091 |
| Prime factorization | 12391 | 12409 |
| Divisors count | 2 | 2 |
| Divisors | 1, 12391 | 1, 12409 |
| Number of properties | 4 | 5 |
| Centered heptagonal primes | 18th | |
| Cousin primes (1st member) | 241st | |
| Isolated primes | 996th | 998th |
| Lucky primes | 252nd | |
| Primes | 1479th | 1481st |
| Pythagorean primes | 731st | |
| Super primes | 234th | |
| Roman numberals | ||
| Base 2 | 110000011001112 | 110000011110012 |
| Base 3 | 1212222213 | 1220001213 |
| Base 4 | 30012134 | 30013214 |
| Base 5 | 3440315 | 3441145 |
| Base 6 | 1332116 | 1332416 |
| Base 7 | 510617 | 511157 |
| Base 8 | 301478 | 301718 |
| Base 9 | 178879 | 180179 |
| Base 10 | 1239110 | 1240910 |
| Base 11 | 934511 | 936111 |
| Base 12 | 720712 | 722112 |
| Base 13 | 584213 | 585713 |
| Base 14 | 473114 | 474514 |
| Base 15 | 3a1115 | 3a2415 |
| Base 16 | 306716 | 307916 |