Compare 161971 vs 161978
| Property | 161971 | 161978 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 1619711 | 21 × 809891 |
| Prime factorization | 161971 | 2 × 80989 |
| Divisors count | 2 | 4 |
| Divisors | 1, 161971 | 1, 2, 80989, 161978 |
| Number of properties | 7 | 1 |
| Emirps | 3270th | |
| Harmonic primes | 5567th | |
| Long primes | 5543rd | |
| Primes | 14849th | |
| Semiprimes | 36997th | |
| Sexy primes (1st member) | 3594th | |
| Sexy prime triplets (1st member) | 741st | |
| Twin primes (2nd member) | 1822nd | |
| Roman numberals | ||
| Base 2 | 1001111000101100112 | 1001111000101110102 |
| Base 3 | 220200112213 | 220200120123 |
| Base 4 | 2132023034 | 2132023224 |
| Base 5 | 201403415 | 201404035 |
| Base 6 | 32455116 | 32455226 |
| Base 7 | 12431357 | 12431457 |
| Base 8 | 4742638 | 4742728 |
| Base 9 | 2661579 | 2661659 |
| Base 10 | 16197110 | 16197810 |
| Base 11 | 10076711 | 10077311 |
| Base 12 | 7989712 | 798a212 |
| Base 13 | 5895413 | 5895b13 |
| Base 14 | 4305514 | 4305c14 |
| Base 15 | 32ed115 | 32ed815 |
| Base 16 | 278b316 | 278ba16 |