Q: What is 21,991 in other base number systems?
A:
| Base | Representation | Base Count |
|---|---|---|
| 2 (Binary) | 1010101111001112 | 15 |
| 3 (Ternary) | 10100111113 | 10 |
| 4 (Quaternary) | 111132134 | 8 |
| 5 (Quinary) | 12004315 | 7 |
| 6 (Senary) | 2454516 | 6 |
| 7 (Septenary) | 1210547 | 6 |
| 8 (Octal) | 527478 | 5 |
| 9 (Nonary) | 331449 | 5 |
| 10 (Decimal) | 2199110 | 5 |
| 11 (Undecimal) | 1558211 | 5 |
| 12 (Duodecimal) | 1088712 | 5 |
| 13 (Tridecimal) | A01813 | 4 |
| 14 (Tetradecimal) | 802B14 | 4 |
| 15 (Pentadecimal) | 67B115 | 4 |
| 16 (Hexadecimal) | 55E716 | 4 |
| 17 | 481A17 | 4 |
| 18 (Octodecimal) | 3DFD18 | 4 |
| 19 | 33H819 | 4 |
| 20 (Vigesimal) | 2EJB20 | 4 |
| 21 | 27I421 | 4 |
| 22 | 219D22 | 4 |
| 23 | 1ID323 | 4 |
| 24 (Tetravigesimal) | 1E4724 | 4 |
| 25 (Pentavigesimal) | 1A4G25 | 4 |
| 26 (Hexavigesimal) | 16DL26 | 4 |
| 27 (Septemvigesimal) | 134D27 | 4 |
| 28 (Octovigesimal) | 101B28 | 4 |
| 29 | Q4929 | 3 |
| 30 (Trigesimal) | OD130 | 3 |
| 31 | MRC31 | 3 |
| 32 (Duotrigesimal) | LF732 | 3 |
| 33 | K6D33 | 3 |
| 34 | J0R34 | 3 |
| 35 | HXB35 | 3 |
| 36 (Hexatrigesimal) | GYV36 | 3 |
| 64 (Tetrasexagesimal) | MjE5OTE= | 8 |