The folowing table expresses '661' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
Base | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
---|---|---|---|---|---|---|---|---|---|---|
2 | 1010010101 | 101 | 10 | 1 | ||||||
3 | 220111 | 21,10 | 1 | |||||||
4 | 22111 | 13,10 | 1 | |||||||
5 | 10121 | 10 | 1 | |||||||
6 | 3021 | 10 | 1 | |||||||
7 | 1633 | 16,10 | 1 | |||||||
8 | 1225 | 12 | 3 | |||||||
9 | 814 | 14 | 5 | |||||||
10 | 661 | 13 | 4 | |||||||
11 | 551 | 10 | 1 | |||||||
12 | 471 | 10 | 1 | |||||||
13 | 3BB | 1C,10 | 1 | |||||||
14 | 353 | B | ||||||||
15 | 2E1 | 12 | 3 | |||||||
16 | 295 | 10 | 1 |
Factors: Prime
661 is in the Pythagorean Triple: (300, 589, 661).