Compare 2121 vs 2131
| Property | 2121 | 2131 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 71 × 1011 | 21311 |
| Prime factorization | 3 × 7 × 101 | 2131 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 7, 21, 101, 303, 707, 2121 | 1, 2131 |
| Number of properties | 0 | 5 |
| Additive primes | 168th | |
| Primes | 321st | |
| Sexy primes (1st member) | 134th | |
| Sexy prime triplets (1st member) | 51st | |
| Twin primes (2nd member) | 66th | |
| Roman numberals | MMCXXI | MMCXXXI |
| Base 2 | 1000010010012 | 1000010100112 |
| Base 3 | 22201203 | 22202213 |
| Base 4 | 2010214 | 2011034 |
| Base 5 | 314415 | 320115 |
| Base 6 | 134536 | 135116 |
| Base 7 | 61207 | 61337 |
| Base 8 | 41118 | 41238 |
| Base 9 | 28169 | 28279 |
| Base 10 | 212110 | 213110 |
| Base 11 | 165911 | 166811 |
| Base 12 | 128912 | 129712 |
| Base 13 | c7213 | c7c13 |
| Base 14 | ab714 | ac314 |
| Base 15 | 96615 | 97115 |
| Base 16 | 84916 | 85316 |