Compare 1940 vs 1943
| Property | 1940 | 1943 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 51 × 971 | 291 × 671 |
| Prime factorization | 2 × 2 × 5 × 97 | 29 × 67 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940 | 1, 29, 67, 1943 |
| Number of properties | 0 | 1 |
| Semiprimes | 561st | |
| Roman numberals | MCMXL | MCMXLIII |
| Base 2 | 111100101002 | 111100101112 |
| Base 3 | 21222123 | 21222223 |
| Base 4 | 1321104 | 1321134 |
| Base 5 | 302305 | 302335 |
| Base 6 | 125526 | 125556 |
| Base 7 | 54417 | 54447 |
| Base 8 | 36248 | 36278 |
| Base 9 | 25859 | 25889 |
| Base 10 | 194010 | 194310 |
| Base 11 | 150411 | 150711 |
| Base 12 | 115812 | 115b12 |
| Base 13 | b6313 | b6613 |
| Base 14 | 9c814 | 9cb14 |
| Base 15 | 89515 | 89815 |
| Base 16 | 79416 | 79716 |