Compare 1891 vs 1923
| Property | 1891 | 1923 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 311 × 611 | 31 × 6411 |
| Prime factorization | 31 × 61 | 3 × 641 |
| Divisors count | 4 | 4 |
| Divisors | 1, 31, 61, 1891 | 1, 3, 641, 1923 |
| Number of properties | 1 | 1 |
| Semiprimes | 542nd | 553rd |
| Roman numberals | MDCCCXCI | MCMXXIII |
| Base 2 | 111011000112 | 111100000112 |
| Base 3 | 21210013 | 21220203 |
| Base 4 | 1312034 | 1320034 |
| Base 5 | 300315 | 301435 |
| Base 6 | 124316 | 125236 |
| Base 7 | 53417 | 54157 |
| Base 8 | 35438 | 36038 |
| Base 9 | 25319 | 25669 |
| Base 10 | 189110 | 192310 |
| Base 11 | 146a11 | 149911 |
| Base 12 | 111712 | 114312 |
| Base 13 | b2613 | b4c13 |
| Base 14 | 99114 | 9b514 |
| Base 15 | 86115 | 88315 |
| Base 16 | 76316 | 78316 |