Compare 81991 vs 82003
| Property | 81991 | 82003 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 4 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 71 × 131 × 171 × 531 | 820031 |
| Prime factorization | 7 × 13 × 17 × 53 | 82003 |
| Divisors count | 16 | 2 |
| Divisors | 1, 7, 13, 17, 53, 91, 119, 221, 371, 689, 901, 1547, 4823, 6307, 11713, 81991 | 1, 82003 |
| Number of properties | 0 | 8 |
| Additive primes | 3328th | |
| Cousin primes (1st member) | 1035th | |
| Harmonic primes | 3026th | |
| Isolated primes | 5955th | |
| Primes | 8018th | |
| Prime triplets (1st member) | 434th | |
| Sexy primes (1st member) | 2082nd | |
| Ulam primes | 583rd | |
| Roman numberals | ||
| Base 2 | 101000000010001112 | 101000000010100112 |
| Base 3 | 110111102013 | 110111110113 |
| Base 4 | 1100010134 | 1100011034 |
| Base 5 | 101104315 | 101110035 |
| Base 6 | 14313316 | 14313516 |
| Base 7 | 4610207 | 4610357 |
| Base 8 | 2401078 | 2401238 |
| Base 9 | 1344219 | 1344349 |
| Base 10 | 8199110 | 8200310 |
| Base 11 | 5666811 | 5667911 |
| Base 12 | 3b54712 | 3b55712 |
| Base 13 | 2b42013 | 2b42c13 |
| Base 14 | 21c4714 | 21c5514 |
| Base 15 | 1946115 | 1946d15 |
| Base 16 | 1404716 | 1405316 |