Compare 2215 vs 2221
| Property | 2215 | 2221 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 4431 | 22211 |
| Prime factorization | 5 × 443 | 2221 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 443, 2215 | 1, 2221 |
| Number of properties | 1 | 8 |
| Additive primes | 174th | |
| Happy primes | 59th | |
| Isolated primes | 198th | |
| Long primes | 129th | |
| Lucky primes | 74th | |
| Primes | 331st | |
| Pythagorean primes | 161st | |
| Semiprimes | 635th | |
| Super primes | 67th | |
| Roman numberals | MMCCXV | MMCCXXI |
| Base 2 | 1000101001112 | 1000101011012 |
| Base 3 | 100010013 | 100010213 |
| Base 4 | 2022134 | 2022314 |
| Base 5 | 323305 | 323415 |
| Base 6 | 141316 | 141416 |
| Base 7 | 63137 | 63227 |
| Base 8 | 42478 | 42558 |
| Base 9 | 30319 | 30379 |
| Base 10 | 221510 | 222110 |
| Base 11 | 173411 | 173a11 |
| Base 12 | 134712 | 135112 |
| Base 13 | 101513 | 101b13 |
| Base 14 | b4314 | b4914 |
| Base 15 | 9ca15 | 9d115 |
| Base 16 | 8a716 | 8ad16 |