Nine-digit fortune telling _ nine-digit calculation

Binary: 42 1: 343 = 38 * 9+ 1, 38 = 4 * 9+2, 4 = 0 * 9+4, and the result of stitching remainder flashback is 42 1.

Pentary: 2333

Decimal system: 343 = 3 *1+3 * 5+3 * 25+2 *125.

(2333)5 is converted into decimal number.

=2x5^3+3x5^2+3x5^ 1+3x5^0

=2x 125+3x25+3x5+3

=250+75+ 15+3=343

Extended data:

Except for 3, the single digit of any prime number cannot be 0, 3 or 6, otherwise it can be divisible by 3.

A decimal number is divisible by 2, 4 or 8 if and only if the sum of numbers is divisible by 2, 4 or 8.

Interoperability with decimal system

Decimalization of decimal system

Example: Convert decimal number 123 to decimal number.

123(9)= 1*9^2+2*9^ 1+3*9^0=8 1+ 18+3= 102( 10)

Baidu Encyclopedia-Binary System