Compare 1921 vs 1925
| Property | 1921 | 1925 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 4 |
| Prime factorization | 171 × 1131 | 52 × 71 × 111 |
| Prime factorization | 17 × 113 | 5 × 5 × 7 × 11 |
| Divisors count | 4 | 12 |
| Divisors | 1, 17, 113, 1921 | 1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925 |
| Number of properties | 1 | 0 |
| Semiprimes | 552nd | |
| Roman numberals | MCMXXI | MCMXXV |
| Base 2 | 111100000012 | 111100001012 |
| Base 3 | 21220113 | 21220223 |
| Base 4 | 1320014 | 1320114 |
| Base 5 | 301415 | 302005 |
| Base 6 | 125216 | 125256 |
| Base 7 | 54137 | 54207 |
| Base 8 | 36018 | 36058 |
| Base 9 | 25649 | 25689 |
| Base 10 | 192110 | 192510 |
| Base 11 | 149711 | 14a011 |
| Base 12 | 114112 | 114512 |
| Base 13 | b4a13 | b5113 |
| Base 14 | 9b314 | 9b714 |
| Base 15 | 88115 | 88515 |
| Base 16 | 78116 | 78516 |