The folowing table expresses '3240' in various number bases. 'DRx' shows the result of 'digit reducing' resulting in an X-digit long number.
Base | DR12 | DR11 | DR10 | DR9 | DR8 | DR7 | DR6 | DR5 | DR4 | DR3 | DR2 | DR1 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2 | 110010101000 | 101 | 10 | 1 | ||||||||
3 | 11110000 | 11 | 2 | |||||||||
4 | 302220 | 21 | 3 | |||||||||
5 | 100430 | 13 | 4 | |||||||||
6 | 23000 | 5 | ||||||||||
7 | 12306 | 15 | 6 | |||||||||
8 | 6250 | 15 | 6 | |||||||||
9 | 4400 | 8 | ||||||||||
10 | 3240 | 9 | ||||||||||
11 | 2486 | 19 | A | |||||||||
12 | 1A60 | 15 | 6 | |||||||||
13 | 1623 | C | ||||||||||
14 | 1276 | 12 | 3 | |||||||||
15 | E60 | 15 | 6 | |||||||||
16 | CA8 | 1E | F |
Factors: 23 * 34 * 5
3 is the sum of the counting numbers from 1 to 80 (See 'The Sum/Product of the First N Counting Numbers').