Compare 2218 vs 2221
| Property | 2218 | 2221 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 21 × 11091 | 22211 |
| Prime factorization | 2 × 1109 | 2221 |
| Divisors count | 4 | 2 |
| Divisors | 1, 2, 1109, 2218 | 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 | 637th | |
| Super primes | 67th | |
| Roman numberals | MMCCXVIII | MMCCXXI |
| Base 2 | 1000101010102 | 1000101011012 |
| Base 3 | 100010113 | 100010213 |
| Base 4 | 2022224 | 2022314 |
| Base 5 | 323335 | 323415 |
| Base 6 | 141346 | 141416 |
| Base 7 | 63167 | 63227 |
| Base 8 | 42528 | 42558 |
| Base 9 | 30349 | 30379 |
| Base 10 | 221810 | 222110 |
| Base 11 | 173711 | 173a11 |
| Base 12 | 134a12 | 135112 |
| Base 13 | 101813 | 101b13 |
| Base 14 | b4614 | b4914 |
| Base 15 | 9cd15 | 9d115 |
| Base 16 | 8aa16 | 8ad16 |