Compare 1970 vs 1981
| Property | 1970 | 1981 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 51 × 1971 | 71 × 2831 |
| Prime factorization | 2 × 5 × 197 | 7 × 283 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 5, 10, 197, 394, 985, 1970 | 1, 7, 283, 1981 |
| Number of properties | 0 | 1 |
| Semiprimes | 572nd | |
| Roman numberals | MCMLXX | MCMLXXXI |
| Base 2 | 111101100102 | 111101111012 |
| Base 3 | 22002223 | 22011013 |
| Base 4 | 1323024 | 1323314 |
| Base 5 | 303405 | 304115 |
| Base 6 | 130426 | 131016 |
| Base 7 | 55137 | 55307 |
| Base 8 | 36628 | 36758 |
| Base 9 | 26289 | 26419 |
| Base 10 | 197010 | 198110 |
| Base 11 | 153111 | 154111 |
| Base 12 | 118212 | 119112 |
| Base 13 | b8713 | b9513 |
| Base 14 | a0a14 | a1714 |
| Base 15 | 8b515 | 8c115 |
| Base 16 | 7b216 | 7bd16 |