Compare 12281 vs 12391
| Property | 12281 | 12391 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 122811 | 123911 |
| Prime factorization | 12281 | 12391 |
| Divisors count | 2 | 2 |
| Divisors | 1, 12281 | 1, 12391 |
| Number of properties | 6 | 4 |
| Centered heptagonal primes | 18th | |
| Chen primes | 753rd | |
| Cousin primes (2nd member) | 238th | |
| Harmonic primes | 530th | |
| Isolated primes | 988th | 996th |
| Lucky primes | 252nd | |
| Primes | 1469th | 1479th |
| Pythagorean primes | 724th | |
| Roman numberals | ||
| Base 2 | 101111111110012 | 110000011001112 |
| Base 3 | 1212112123 | 1212222213 |
| Base 4 | 23333214 | 30012134 |
| Base 5 | 3431115 | 3440315 |
| Base 6 | 1325056 | 1332116 |
| Base 7 | 505437 | 510617 |
| Base 8 | 277718 | 301478 |
| Base 9 | 177559 | 178879 |
| Base 10 | 1228110 | 1239110 |
| Base 11 | 925511 | 934511 |
| Base 12 | 713512 | 720712 |
| Base 13 | 578913 | 584213 |
| Base 14 | 469314 | 473114 |
| Base 15 | 398b15 | 3a1115 |
| Base 16 | 2ff916 | 306716 |