Compare 16681 vs 16691
| Property | 16681 | 16691 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 71 × 23831 | 166911 |
| Prime factorization | 7 × 2383 | 16691 |
| Divisors count | 4 | 2 |
| Divisors | 1, 7, 2383, 16681 | 1, 16691 |
| Number of properties | 1 | 6 |
| Additive primes | 919th | |
| Chen primes | 972nd | |
| Emirps | 508th | |
| Long primes | 747th | |
| Primes | 1930th | |
| Semiprimes | 4269th | |
| Twin primes (1st member) | 294th | |
| Roman numberals | ||
| Base 2 | 1000001001010012 | 1000001001100112 |
| Base 3 | 2112122113 | 2112200123 |
| Base 4 | 100102214 | 100103034 |
| Base 5 | 10132115 | 10132315 |
| Base 6 | 2051216 | 2051356 |
| Base 7 | 664307 | 664437 |
| Base 8 | 404518 | 404638 |
| Base 9 | 247849 | 248059 |
| Base 10 | 1668110 | 1669110 |
| Base 11 | 1159511 | 115a411 |
| Base 12 | 97a112 | 97ab12 |
| Base 13 | 779213 | 779c13 |
| Base 14 | 611714 | 612314 |
| Base 15 | 4e2115 | 4e2b15 |
| Base 16 | 412916 | 413316 |