Compare 2121 vs 2129
| Property | 2121 | 2129 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 71 × 1011 | 21291 |
| Prime factorization | 3 × 7 × 101 | 2129 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 7, 21, 101, 303, 707, 2121 | 1, 2129 |
| Number of properties | 0 | 5 |
| Chen primes | 196th | |
| Primes | 320th | |
| Pythagorean primes | 155th | |
| Sophie germain primes | 65th | |
| Twin primes (1st member) | 66th | |
| Roman numberals | MMCXXI | MMCXXIX |
| Base 2 | 1000010010012 | 1000010100012 |
| Base 3 | 22201203 | 22202123 |
| Base 4 | 2010214 | 2011014 |
| Base 5 | 314415 | 320045 |
| Base 6 | 134536 | 135056 |
| Base 7 | 61207 | 61317 |
| Base 8 | 41118 | 41218 |
| Base 9 | 28169 | 28259 |
| Base 10 | 212110 | 212910 |
| Base 11 | 165911 | 166611 |
| Base 12 | 128912 | 129512 |
| Base 13 | c7213 | c7a13 |
| Base 14 | ab714 | ac114 |
| Base 15 | 96615 | 96e15 |
| Base 16 | 84916 | 85116 |