Compare 1938 vs 1945
| Property | 1938 | 1945 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 4 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 21 × 31 × 171 × 191 | 51 × 3891 |
| Prime factorization | 2 × 3 × 17 × 19 | 5 × 389 |
| Divisors count | 16 | 4 |
| Divisors | 1, 2, 3, 6, 17, 19, 34, 38, 51, 57, 102, 114, 323, 646, 969, 1938 | 1, 5, 389, 1945 |
| Number of properties | 0 | 1 |
| Semiprimes | 562nd | |
| Roman numberals | MCMXXXVIII | MCMXLV |
| Base 2 | 111100100102 | 111100110012 |
| Base 3 | 21222103 | 22000013 |
| Base 4 | 1321024 | 1321214 |
| Base 5 | 302235 | 302405 |
| Base 6 | 125506 | 130016 |
| Base 7 | 54367 | 54467 |
| Base 8 | 36228 | 36318 |
| Base 9 | 25839 | 26019 |
| Base 10 | 193810 | 194510 |
| Base 11 | 150211 | 150911 |
| Base 12 | 115612 | 116112 |
| Base 13 | b6113 | b6813 |
| Base 14 | 9c614 | 9cd14 |
| Base 15 | 89315 | 89a15 |
| Base 16 | 79216 | 79916 |