Compare 1973 vs 1985
| Property | 1973 | 1985 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 19731 | 51 × 3971 |
| Prime factorization | 1973 | 5 × 397 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1973 | 1, 5, 397, 1985 |
| Number of properties | 7 | 1 |
| Good primes | 61st | |
| Harmonic primes | 111th | |
| Isolated primes | 179th | |
| Primes | 298th | |
| Pythagorean primes | 145th | |
| Semiprimes | 575th | |
| Sexy primes (1st member) | 126th | |
| Sophie germain primes | 60th | |
| Roman numberals | MCMLXXIII | MCMLXXXV |
| Base 2 | 111101101012 | 111110000012 |
| Base 3 | 22010023 | 22011123 |
| Base 4 | 1323114 | 1330014 |
| Base 5 | 303435 | 304205 |
| Base 6 | 130456 | 131056 |
| Base 7 | 55167 | 55347 |
| Base 8 | 36658 | 37018 |
| Base 9 | 26329 | 26459 |
| Base 10 | 197310 | 198510 |
| Base 11 | 153411 | 154511 |
| Base 12 | 118512 | 119512 |
| Base 13 | b8a13 | b9913 |
| Base 14 | a0d14 | a1b14 |
| Base 15 | 8b815 | 8c515 |
| Base 16 | 7b516 | 7c116 |