Binary numbers only have the numbers 0 and 1, and there will be no numbers such as 7 and 8, so 78 will not be a binary number, at least it is a number represented by a number system above nine.

If 78 is a decimal number, it will be converted into a hexadecimal number:

78/6= 13

Remainder 0

13/6=2

Remainder 1

2/6=0

Remainder 2

(78) 10=(2 10)6