The folowing table expresses '217' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
Base | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
---|---|---|---|---|---|---|---|---|
2 | 11011001 | 101 | 10 | 1 | ||||
3 | 22001 | 12,10 | 1 | |||||
4 | 3121 | 13,10 | 1 | |||||
5 | 1332 | 14,10 | 1 | |||||
6 | 1001 | 2 | ||||||
7 | 430 | 10 | 1 | |||||
8 | 331 | 7 | ||||||
9 | 261 | 10 | 1 | |||||
10 | 217 | 10 | 1 | |||||
11 | 188 | 16 | 7 | |||||
12 | 161 | 8 | ||||||
13 | 139 | 10 | 1 | |||||
14 | 117 | 9 | ||||||
15 | E7,16 | 7 | ||||||
16 | D9,16 | 7 |
Factors: 7 * 31
217 is in the Pythagorean Triple: (217, 456, 505).