Compare 161557 vs 161561
| Property | 161557 | 161561 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 111 × 191 × 7731 | 1615611 |
| Prime factorization | 11 × 19 × 773 | 161561 |
| Divisors count | 8 | 2 |
| Divisors | 1, 11, 19, 209, 773, 8503, 14687, 161557 | 1, 161561 |
| Number of properties | 0 | 8 |
| Chen primes | 6316th | |
| Emirps | 3259th | |
| Happy primes | 2292nd | |
| Primes | 14813th | |
| Pythagorean primes | 7387th | |
| Sophie germain primes | 1731st | |
| Super primes | 1735th | |
| Twin primes (1st member) | 1815th | |
| Roman numberals | ||
| Base 2 | 1001110111000101012 | 1001110111000110012 |
| Base 3 | 220121211213 | 220121212023 |
| Base 4 | 2131301114 | 2131301214 |
| Base 5 | 201322125 | 201322215 |
| Base 6 | 32435416 | 32435456 |
| Base 7 | 12420047 | 12420117 |
| Base 8 | 4734258 | 4734318 |
| Base 9 | 2655479 | 2655529 |
| Base 10 | 16155710 | 16156110 |
| Base 11 | 10042011 | 10042411 |
| Base 12 | 795b112 | 795b512 |
| Base 13 | 586c613 | 586ca13 |
| Base 14 | 42c3b14 | 42c4114 |
| Base 15 | 32d0715 | 32d0b15 |
| Base 16 | 2771516 | 2771916 |