Compare 6661 vs 9901
| Property | 6661 | 9901 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 66611 | 99011 |
| Prime factorization | 6661 | 9901 |
| Divisors count | 2 | 2 |
| Divisors | 1, 6661 | 1, 9901 |
| Number of properties | 11 | 7 |
| Additive primes | 428th | 585th |
| Centered decagonal primes | 23rd | 26th |
| Chen primes | 469th | 630th |
| Happy primes | 147th | |
| Harmonic primes | 312th | |
| Isolated primes | 814th | |
| Long primes | 329th | |
| Lucky primes | 160th | |
| Primes | 859th | 1221st |
| Pythagorean primes | 423rd | 605th |
| Sexy primes (1st member) | 409th | |
| Super primes | 149th | |
| Twin primes (2nd member) | 153rd | |
| Roman numberals | ||
| Base 2 | 11010000001012 | 100110101011012 |
| Base 3 | 1000102013 | 1111202013 |
| Base 4 | 12200114 | 21222314 |
| Base 5 | 2031215 | 3041015 |
| Base 6 | 505016 | 1135016 |
| Base 7 | 252647 | 406037 |
| Base 8 | 150058 | 232558 |
| Base 9 | 101219 | 145219 |
| Base 10 | 666110 | 990110 |
| Base 11 | 500611 | 749111 |
| Base 12 | 3a3112 | 589112 |
| Base 13 | 305513 | 467813 |
| Base 14 | 25db14 | 387314 |
| Base 15 | 1e9115 | 2e0115 |
| Base 16 | 1a0516 | 26ad16 |