Compare 121905 vs 121909
| Property | 121905 | 121909 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 7 | 1 |
| Prime factorization | 34 × 51 × 71 × 431 | 1219091 |
| Prime factorization | 3 × 3 × 3 × 3 × 5 × 7 × 43 | 121909 |
| Divisors count | 40 | 2 |
| Divisors | 1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 63, 81, 105, 129, 135, 189, 215, 301, 315, 387, 405, 567, 645, 903, 945, 1161, 1505, 1935, 2709, 2835, 3483, 4515, 5805, 8127, 13545, 17415, 24381, 40635, 121905 | 1, 121909 |
| Number of properties | 0 | 5 |
| Chen primes | 4973rd | |
| Isolated primes | 8587th | |
| Long primes | 4293rd | |
| Primes | 11466th | |
| Pythagorean primes | 5702nd | |
| Roman numberals | ||
| Base 2 | 111011100001100012 | 111011100001101012 |
| Base 3 | 200120200003 | 200120200113 |
| Base 4 | 1313003014 | 1313003114 |
| Base 5 | 124001105 | 124001145 |
| Base 6 | 23402136 | 23402216 |
| Base 7 | 10152607 | 10152647 |
| Base 8 | 3560618 | 3560658 |
| Base 9 | 2052009 | 2052049 |
| Base 10 | 12190510 | 12190910 |
| Base 11 | 8365311 | 8365711 |
| Base 12 | 5a66912 | 5a67112 |
| Base 13 | 4364413 | 4364813 |
| Base 14 | 325d714 | 325db14 |
| Base 15 | 261c015 | 261c415 |
| Base 16 | 1dc3116 | 1dc3516 |