Compare 1921 vs 1954
| Property | 1921 | 1954 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 171 × 1131 | 21 × 9771 |
| Prime factorization | 17 × 113 | 2 × 977 |
| Divisors count | 4 | 4 |
| Divisors | 1, 17, 113, 1921 | 1, 2, 977, 1954 |
| Number of properties | 1 | 1 |
| Semiprimes | 552nd | 563rd |
| Roman numberals | MCMXXI | MCMLIV |
| Base 2 | 111100000012 | 111101000102 |
| Base 3 | 21220113 | 22001013 |
| Base 4 | 1320014 | 1322024 |
| Base 5 | 301415 | 303045 |
| Base 6 | 125216 | 130146 |
| Base 7 | 54137 | 54617 |
| Base 8 | 36018 | 36428 |
| Base 9 | 25649 | 26119 |
| Base 10 | 192110 | 195410 |
| Base 11 | 149711 | 151711 |
| Base 12 | 114112 | 116a12 |
| Base 13 | b4a13 | b7413 |
| Base 14 | 9b314 | 9d814 |
| Base 15 | 88115 | 8a415 |
| Base 16 | 78116 | 7a216 |