Compare 1954 vs 1981
| Property | 1954 | 1981 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 9771 | 71 × 2831 |
| Prime factorization | 2 × 977 | 7 × 283 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 977, 1954 | 1, 7, 283, 1981 |
| Number of properties | 1 | 1 |
| Semiprimes | 563rd | 572nd |
| Roman numberals | MCMLIV | MCMLXXXI |
| Base 2 | 111101000102 | 111101111012 |
| Base 3 | 22001013 | 22011013 |
| Base 4 | 1322024 | 1323314 |
| Base 5 | 303045 | 304115 |
| Base 6 | 130146 | 131016 |
| Base 7 | 54617 | 55307 |
| Base 8 | 36428 | 36758 |
| Base 9 | 26119 | 26419 |
| Base 10 | 195410 | 198110 |
| Base 11 | 151711 | 154111 |
| Base 12 | 116a12 | 119112 |
| Base 13 | b7413 | b9513 |
| Base 14 | 9d814 | a1714 |
| Base 15 | 8a415 | 8c115 |
| Base 16 | 7a216 | 7bd16 |