Compare 81439 vs 81444
| Property | 81439 | 81444 | 
|---|---|---|
| Type | prime | composite number | 
| Unique factors | 1 | 4 | 
| Total factors | 1 | 5 | 
| Prime factorization | 814391 | 22 × 31 × 111 × 6171 | 
| Prime factorization | 81439 | 2 × 2 × 3 × 11 × 617 | 
| Divisors count | 2 | 24 | 
| Divisors | 1, 81439 | 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 617, 1234, 1851, 2468, 3702, 6787, 7404, 13574, 20361, 27148, 40722, 81444 | 
| Number of properties | 5 | 0 | 
| Harmonic primes | 3009th | |
| Isolated primes | 5917th | |
| Lucky primes | 1074th | |
| Primes | 7968th | |
| Ulam primes | 581st | |
| Roman numberals | ||
| Base 2 | 100111110000111112 | 100111110001001002 | 
| Base 3 | 110102010213 | 110102011103 | 
| Base 4 | 1033201334 | 1033202104 | 
| Base 5 | 101012245 | 101012345 | 
| Base 6 | 14250116 | 14250206 | 
| Base 7 | 4563017 | 4563067 | 
| Base 8 | 2370378 | 2370448 | 
| Base 9 | 1336379 | 1336439 | 
| Base 10 | 8143910 | 8144410 | 
| Base 11 | 5620611 | 5621011 | 
| Base 12 | 3b16712 | 3b17012 | 
| Base 13 | 2b0b713 | 2b0bc13 | 
| Base 14 | 2197114 | 2197614 | 
| Base 15 | 191e415 | 191e915 | 
| Base 16 | 13e1f16 | 13e2416 |