Compare 1971 vs 1973
| Property | 1971 | 1973 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 2 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 33 × 731 | 19731 |
| Prime factorization | 3 × 3 × 3 × 73 | 1973 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 9, 27, 73, 219, 657, 1971 | 1, 1973 |
| Number of properties | 0 | 7 |
| Good primes | 61st | |
| Harmonic primes | 111th | |
| Isolated primes | 179th | |
| Primes | 298th | |
| Pythagorean primes | 145th | |
| Sexy primes (1st member) | 126th | |
| Sophie germain primes | 60th | |
| Roman numberals | MCMLXXI | MCMLXXIII |
| Base 2 | 111101100112 | 111101101012 |
| Base 3 | 22010003 | 22010023 |
| Base 4 | 1323034 | 1323114 |
| Base 5 | 303415 | 303435 |
| Base 6 | 130436 | 130456 |
| Base 7 | 55147 | 55167 |
| Base 8 | 36638 | 36658 |
| Base 9 | 26309 | 26329 |
| Base 10 | 197110 | 197310 |
| Base 11 | 153211 | 153411 |
| Base 12 | 118312 | 118512 |
| Base 13 | b8813 | b8a13 |
| Base 14 | a0b14 | a0d14 |
| Base 15 | 8b615 | 8b815 |
| Base 16 | 7b316 | 7b516 |