Compare 1975 vs 1985
| Property | 1975 | 1985 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 52 × 791 | 51 × 3971 |
| Prime factorization | 5 × 5 × 79 | 5 × 397 |
| Divisors count | 6 | 4 |
| Divisors | 1, 5, 25, 79, 395, 1975 | 1, 5, 397, 1985 |
| Number of properties | 0 | 1 |
| Semiprimes | 575th | |
| Roman numberals | MCMLXXV | MCMLXXXV |
| Base 2 | 111101101112 | 111110000012 |
| Base 3 | 22010113 | 22011123 |
| Base 4 | 1323134 | 1330014 |
| Base 5 | 304005 | 304205 |
| Base 6 | 130516 | 131056 |
| Base 7 | 55217 | 55347 |
| Base 8 | 36678 | 37018 |
| Base 9 | 26349 | 26459 |
| Base 10 | 197510 | 198510 |
| Base 11 | 153611 | 154511 |
| Base 12 | 118712 | 119512 |
| Base 13 | b8c13 | b9913 |
| Base 14 | a1114 | a1b14 |
| Base 15 | 8ba15 | 8c515 |
| Base 16 | 7b716 | 7c116 |