Compare 1801 vs 1807
| Property | 1801 | 1807 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 18011 | 131 × 1391 |
| Prime factorization | 1801 | 13 × 139 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1801 | 1, 13, 139, 1807 |
| Number of properties | 7 | 1 |
| Chen primes | 174th | |
| Cuban primes 1 | 13th | |
| Harmonic primes | 99th | |
| Isolated primes | 168th | |
| Lucky primes | 66th | |
| Primes | 279th | |
| Pythagorean primes | 136th | |
| Semiprimes | 520th | |
| Roman numberals | MDCCCI | MDCCCVII |
| Base 2 | 111000010012 | 111000011112 |
| Base 3 | 21102013 | 21102213 |
| Base 4 | 1300214 | 1300334 |
| Base 5 | 242015 | 242125 |
| Base 6 | 122016 | 122116 |
| Base 7 | 51527 | 51617 |
| Base 8 | 34118 | 34178 |
| Base 9 | 24219 | 24279 |
| Base 10 | 180110 | 180710 |
| Base 11 | 139811 | 13a311 |
| Base 12 | 106112 | 106712 |
| Base 13 | a8713 | a9013 |
| Base 14 | 92914 | 93114 |
| Base 15 | 80115 | 80715 |
| Base 16 | 70916 | 70f16 |