Compare 21397 vs 21577
| Property | 21397 | 21577 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 213971 | 215771 |
| Prime factorization | 21397 | 21577 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21397 | 1, 21577 |
| Number of properties | 5 | 6 |
| Chen primes | 1188th | |
| Cousin primes (1st member) | 365th | |
| Harmonic primes | 890th | |
| Isolated primes | 1677th | 1691st |
| Long primes | 915th | |
| Primes | 2402nd | 2422nd |
| Pythagorean primes | 1191st | 1201st |
| Sexy primes (2nd member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100101012 | 1010100010010012 |
| Base 3 | 10021001113 | 10021210113 |
| Base 4 | 110321114 | 111010214 |
| Base 5 | 11410425 | 11423025 |
| Base 6 | 2430216 | 2435216 |
| Base 7 | 1162457 | 1166237 |
| Base 8 | 516258 | 521118 |
| Base 9 | 323149 | 325349 |
| Base 10 | 2139710 | 2157710 |
| Base 11 | 1509211 | 1523611 |
| Base 12 | 1047112 | 105a112 |
| Base 13 | 997c13 | 9a8a13 |
| Base 14 | 7b2514 | 7c1314 |
| Base 15 | 651715 | 65d715 |
| Base 16 | 539516 | 544916 |