Compare 213721 vs 213728
| Property | 213721 | 213728 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 6 |
| Prime factorization | 2137211 | 25 × 66791 |
| Prime factorization | 213721 | 2 × 2 × 2 × 2 × 2 × 6679 |
| Divisors count | 2 | 12 |
| Divisors | 1, 213721 | 1, 2, 4, 8, 16, 32, 6679, 13358, 26716, 53432, 106864, 213728 |
| Number of properties | 6 | 0 |
| Happy primes | 2904th | |
| Isolated primes | 14548th | |
| Lucky primes | 2444th | |
| Primes | 19105th | |
| Pythagorean primes | 9540th | |
| Sexy primes (1st member) | 4530th | |
| Roman numberals | ||
| Base 2 | 1101000010110110012 | 1101000010111000002 |
| Base 3 | 1012120111213 | 1012120112123 |
| Base 4 | 3100231214 | 3100232004 |
| Base 5 | 233143415 | 233144035 |
| Base 6 | 43252416 | 43252526 |
| Base 7 | 15500447 | 15500547 |
| Base 8 | 6413318 | 6413408 |
| Base 9 | 3551479 | 3551559 |
| Base 10 | 21372110 | 21372810 |
| Base 11 | 13663211 | 13663911 |
| Base 12 | a382112 | a382812 |
| Base 13 | 7638113 | 7638813 |
| Base 14 | 57c5b14 | 57c6414 |
| Base 15 | 434d115 | 434d815 |
| Base 16 | 342d916 | 342e016 |