Compare 1945 vs 1947
| Property | 1945 | 1947 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 51 × 3891 | 31 × 111 × 591 |
| Prime factorization | 5 × 389 | 3 × 11 × 59 |
| Divisors count | 4 | 8 |
| Divisors | 1, 5, 389, 1945 | 1, 3, 11, 33, 59, 177, 649, 1947 |
| Number of properties | 1 | 0 |
| Semiprimes | 562nd | |
| Roman numberals | MCMXLV | MCMXLVII |
| Base 2 | 111100110012 | 111100110112 |
| Base 3 | 22000013 | 22000103 |
| Base 4 | 1321214 | 1321234 |
| Base 5 | 302405 | 302425 |
| Base 6 | 130016 | 130036 |
| Base 7 | 54467 | 54517 |
| Base 8 | 36318 | 36338 |
| Base 9 | 26019 | 26039 |
| Base 10 | 194510 | 194710 |
| Base 11 | 150911 | 151011 |
| Base 12 | 116112 | 116312 |
| Base 13 | b6813 | b6a13 |
| Base 14 | 9cd14 | 9d114 |
| Base 15 | 89a15 | 89c15 |
| Base 16 | 79916 | 79b16 |