Compare 3990 vs 4001
| Property | 3990 | 4001 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 5 | 1 |
| Total factors | 5 | 1 |
| Prime factorization | 21 × 31 × 51 × 71 × 191 | 40011 |
| Prime factorization | 2 × 3 × 5 × 7 × 19 | 4001 |
| Divisors count | 32 | 2 |
| Divisors | 1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 57, 70, 95, 105, 114, 133, 190, 210, 266, 285, 399, 570, 665, 798, 1330, 1995, 3990 | 1, 4001 |
| Number of properties | 0 | 10 |
| Additive primes | 282nd | |
| Chen primes | 321st | |
| Good primes | 95th | |
| Primes | 551st | |
| Prime triplets (1st member) | 72nd | |
| Pythagorean primes | 270th | |
| Sexy primes (1st member) | 203rd | |
| Sexy prime quadrupletss (1st member) | 17th | |
| Sexy prime triplets (1st member) | 71st | |
| Twin primes (1st member) | 104th | |
| Roman numberals | MMMCMXC | MMMMI |
| Base 2 | 1111100101102 | 1111101000012 |
| Base 3 | 121102103 | 121110123 |
| Base 4 | 3321124 | 3322014 |
| Base 5 | 1114305 | 1120015 |
| Base 6 | 302506 | 303056 |
| Base 7 | 144307 | 144447 |
| Base 8 | 76268 | 76418 |
| Base 9 | 54239 | 54359 |
| Base 10 | 399010 | 400110 |
| Base 11 | 2aa811 | 300811 |
| Base 12 | 238612 | 239512 |
| Base 13 | 1a7c13 | 1a8a13 |
| Base 14 | 165014 | 165b14 |
| Base 15 | 12b015 | 12bb15 |
| Base 16 | f9616 | fa116 |