Compare 1919 vs 1930
| Property | 1919 | 1930 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 191 × 1011 | 21 × 51 × 1931 |
| Prime factorization | 19 × 101 | 2 × 5 × 193 |
| Divisors count | 4 | 8 |
| Divisors | 1, 19, 101, 1919 | 1, 2, 5, 10, 193, 386, 965, 1930 |
| Number of properties | 1 | 0 |
| Semiprimes | 551st | |
| Roman numberals | MCMXIX | MCMXXX |
| Base 2 | 111011111112 | 111100010102 |
| Base 3 | 21220023 | 21221113 |
| Base 4 | 1313334 | 1320224 |
| Base 5 | 301345 | 302105 |
| Base 6 | 125156 | 125346 |
| Base 7 | 54117 | 54257 |
| Base 8 | 35778 | 36128 |
| Base 9 | 25629 | 25749 |
| Base 10 | 191910 | 193010 |
| Base 11 | 149511 | 14a511 |
| Base 12 | 113b12 | 114a12 |
| Base 13 | b4813 | b5613 |
| Base 14 | 9b114 | 9bc14 |
| Base 15 | 87e15 | 88a15 |
| Base 16 | 77f16 | 78a16 |