Compare 161989 vs 161999
| Property | 161989 | 161999 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 231 × 70431 | 1619991 |
| Prime factorization | 23 × 7043 | 161999 |
| Divisors count | 4 | 2 |
| Divisors | 1, 23, 7043, 161989 | 1, 161999 |
| Number of properties | 1 | 4 |
| Chen primes | 6332nd | |
| Harmonic primes | 5570th | |
| Isolated primes | 11209th | |
| Primes | 14852nd | |
| Semiprimes | 37000th | |
| Roman numberals | ||
| Base 2 | 1001111000110001012 | 1001111000110011112 |
| Base 3 | 220200121213 | 220200122223 |
| Base 4 | 2132030114 | 2132030334 |
| Base 5 | 201404245 | 201404445 |
| Base 6 | 32455416 | 32455556 |
| Base 7 | 12431627 | 12432057 |
| Base 8 | 4743058 | 4743178 |
| Base 9 | 2661779 | 2661889 |
| Base 10 | 16198910 | 16199910 |
| Base 11 | 10078311 | 10079211 |
| Base 12 | 798b112 | 798bb12 |
| Base 13 | 5896913 | 5897613 |
| Base 14 | 4306914 | 4307514 |
| Base 15 | 32ee415 | 32eee15 |
| Base 16 | 278c516 | 278cf16 |