Compare 1975 vs 1979
| Property | 1975 | 1979 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 52 × 791 | 19791 |
| Prime factorization | 5 × 5 × 79 | 1979 |
| Divisors count | 6 | 2 |
| Divisors | 1, 5, 25, 79, 395, 1975 | 1, 1979 |
| Number of properties | 0 | 6 |
| Chen primes | 184th | |
| Emirps | 96th | |
| Isolated primes | 180th | |
| Long primes | 116th | |
| Primes | 299th | |
| Sexy primes (2nd member) | 126th | |
| Roman numberals | MCMLXXV | MCMLXXIX |
| Base 2 | 111101101112 | 111101110112 |
| Base 3 | 22010113 | 22010223 |
| Base 4 | 1323134 | 1323234 |
| Base 5 | 304005 | 304045 |
| Base 6 | 130516 | 130556 |
| Base 7 | 55217 | 55257 |
| Base 8 | 36678 | 36738 |
| Base 9 | 26349 | 26389 |
| Base 10 | 197510 | 197910 |
| Base 11 | 153611 | 153a11 |
| Base 12 | 118712 | 118b12 |
| Base 13 | b8c13 | b9313 |
| Base 14 | a1114 | a1514 |
| Base 15 | 8ba15 | 8be15 |
| Base 16 | 7b716 | 7bb16 |