Compare 28181 vs 28661
| Property | 28181 | 28661 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 281811 | 286611 |
| Prime factorization | 28181 | 28661 |
| Divisors count | 2 | 2 |
| Divisors | 1, 28181 | 1, 28661 |
| Number of properties | 5 | 8 |
| Additive primes | 1426th | |
| Chen primes | 1493rd | 1512th |
| Cousin primes (2nd member) | 455th | |
| Harmonic primes | 1147th | |
| Long primes | 1187th | |
| Primes | 3072nd | 3122nd |
| Prime triplets (2nd member) | 221st | |
| Pythagorean primes | 1529th | 1553rd |
| Twin primes (1st member) | 449th | 457th |
| Roman numberals | ||
| Base 2 | 1101110000101012 | 1101111111101012 |
| Base 3 | 11021222023 | 11100221123 |
| Base 4 | 123201114 | 123333114 |
| Base 5 | 14002115 | 14041215 |
| Base 6 | 3342456 | 3404056 |
| Base 7 | 1451067 | 1463637 |
| Base 8 | 670258 | 677658 |
| Base 9 | 425829 | 432759 |
| Base 10 | 2818110 | 2866110 |
| Base 11 | 1a19a11 | 1a59611 |
| Base 12 | 1438512 | 1470512 |
| Base 13 | ca9a13 | 1007913 |
| Base 14 | a3ad14 | a63314 |
| Base 15 | 853b15 | 875b15 |
| Base 16 | 6e1516 | 6ff516 |