Compare 81421 vs 81429
| Property | 81421 | 81429 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 814211 | 31 × 271431 |
| Prime factorization | 81421 | 3 × 27143 |
| Divisors count | 2 | 4 |
| Divisors | 1, 81421 | 1, 3, 27143, 81429 |
| Number of properties | 6 | 1 |
| Happy primes | 1236th | |
| Harmonic primes | 3008th | |
| Isolated primes | 5916th | |
| Lucky primes | 1073rd | |
| Primes | 7967th | |
| Pythagorean primes | 3970th | |
| Semiprimes | 19232nd | |
| Roman numberals | ||
| Base 2 | 100111110000011012 | 100111110000101012 |
| Base 3 | 110102001213 | 110102002203 |
| Base 4 | 1033200314 | 1033201114 |
| Base 5 | 101011415 | 101012045 |
| Base 6 | 14245416 | 14245536 |
| Base 7 | 4562447 | 4562557 |
| Base 8 | 2370158 | 2370258 |
| Base 9 | 1336179 | 1336269 |
| Base 10 | 8142110 | 8142910 |
| Base 11 | 5619a11 | 561a711 |
| Base 12 | 3b15112 | 3b15912 |
| Base 13 | 2b0a213 | 2b0aa13 |
| Base 14 | 2195b14 | 2196514 |
| Base 15 | 191d115 | 191d915 |
| Base 16 | 13e0d16 | 13e1516 |