Compare 16981 vs 16985
| Property | 16981 | 16985 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 169811 | 51 × 431 × 791 |
| Prime factorization | 16981 | 5 × 43 × 79 |
| Divisors count | 2 | 8 |
| Divisors | 1, 16981 | 1, 5, 43, 79, 215, 395, 3397, 16985 |
| Number of properties | 7 | 0 |
| Long primes | 757th | |
| Lucky primes | 319th | |
| Primes | 1958th | |
| Pythagorean primes | 966th | |
| Sexy primes (1st member) | 610th | |
| Sexy prime triplets (1st member) | 171st | |
| Twin primes (2nd member) | 297th | |
| Roman numberals | ||
| Base 2 | 1000010010101012 | 1000010010110012 |
| Base 3 | 2120212213 | 2120220023 |
| Base 4 | 100211114 | 100211214 |
| Base 5 | 10204115 | 10204205 |
| Base 6 | 2103416 | 2103456 |
| Base 7 | 1003367 | 1003437 |
| Base 8 | 411258 | 411318 |
| Base 9 | 252579 | 252629 |
| Base 10 | 1698110 | 1698510 |
| Base 11 | 1183811 | 1184111 |
| Base 12 | 99b112 | 99b512 |
| Base 13 | 796313 | 796713 |
| Base 14 | 628d14 | 629314 |
| Base 15 | 507115 | 507515 |
| Base 16 | 425516 | 425916 |