Compare 221219 vs 221231
| Property | 221219 | 221231 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 2212191 | 1971 × 11231 |
| Prime factorization | 221219 | 197 × 1123 |
| Divisors count | 2 | 4 |
| Divisors | 1, 221219 | 1, 197, 1123, 221231 |
| Number of properties | 7 | 1 |
| Additive primes | 7977th | |
| Harmonic primes | 7398th | |
| Isolated primes | 15037th | |
| Long primes | 7380th | |
| Primes | 19714th | |
| Safe primes | 1272nd | |
| Semiprimes | 49785th | |
| Sophie germain primes | 2236th | |
| Roman numberals | ||
| Base 2 | 1101100000001000112 | 1101100000001011112 |
| Base 3 | 1020201100223 | 1020201102023 |
| Base 4 | 3120002034 | 3120002334 |
| Base 5 | 240343345 | 240344115 |
| Base 6 | 44240556 | 44241156 |
| Base 7 | 16106457 | 16106637 |
| Base 8 | 6600438 | 6600578 |
| Base 9 | 3664089 | 3664229 |
| Base 10 | 22121910 | 22123110 |
| Base 11 | 14122911 | 14123a11 |
| Base 12 | a802b12 | a803b12 |
| Base 13 | 798cb13 | 7990a13 |
| Base 14 | 5a89514 | 5a8a314 |
| Base 15 | 4582e15 | 4583b15 |
| Base 16 | 3602316 | 3602f16 |