Numeric Value: 221

The folowing table expresses '221' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.

BaseDR8DR7DR6DR5DR4DR3DR2DR1
211011101    110101
3   22012  21,101
4    3131 202
5    1341 14,101
6    1005 101
7     434145
8     335134
9     265145
10     221 5
11     191101
12     165101
13     140 5
14     11B D
15      EB,1AB
16      DD,1AB

Math World

Factors: 13 * 17

221 is in the Pythagorean Triples: (21, 220, 221), (60, 221, 229), (140, 171, 221).