1. Divide the number repeatedly by 2:
Keep track of each remainder.
Stop when you get a quotient that is equal to zero.
- division = quotient + remainder;
- 10 010 010 396 ÷ 2 = 5 005 005 198 + 0;
- 5 005 005 198 ÷ 2 = 2 502 502 599 + 0;
- 2 502 502 599 ÷ 2 = 1 251 251 299 + 1;
- 1 251 251 299 ÷ 2 = 625 625 649 + 1;
- 625 625 649 ÷ 2 = 312 812 824 + 1;
- 312 812 824 ÷ 2 = 156 406 412 + 0;
- 156 406 412 ÷ 2 = 78 203 206 + 0;
- 78 203 206 ÷ 2 = 39 101 603 + 0;
- 39 101 603 ÷ 2 = 19 550 801 + 1;
- 19 550 801 ÷ 2 = 9 775 400 + 1;
- 9 775 400 ÷ 2 = 4 887 700 + 0;
- 4 887 700 ÷ 2 = 2 443 850 + 0;
- 2 443 850 ÷ 2 = 1 221 925 + 0;
- 1 221 925 ÷ 2 = 610 962 + 1;
- 610 962 ÷ 2 = 305 481 + 0;
- 305 481 ÷ 2 = 152 740 + 1;
- 152 740 ÷ 2 = 76 370 + 0;
- 76 370 ÷ 2 = 38 185 + 0;
- 38 185 ÷ 2 = 19 092 + 1;
- 19 092 ÷ 2 = 9 546 + 0;
- 9 546 ÷ 2 = 4 773 + 0;
- 4 773 ÷ 2 = 2 386 + 1;
- 2 386 ÷ 2 = 1 193 + 0;
- 1 193 ÷ 2 = 596 + 1;
- 596 ÷ 2 = 298 + 0;
- 298 ÷ 2 = 149 + 0;
- 149 ÷ 2 = 74 + 1;
- 74 ÷ 2 = 37 + 0;
- 37 ÷ 2 = 18 + 1;
- 18 ÷ 2 = 9 + 0;
- 9 ÷ 2 = 4 + 1;
- 4 ÷ 2 = 2 + 0;
- 2 ÷ 2 = 1 + 0;
- 1 ÷ 2 = 0 + 1;
2. Construct the base 2 representation of the positive number:
Take all the remainders starting from the bottom of the list constructed above.
10 010 010 396(10) = 10 0101 0100 1010 0100 1010 0011 0001 1100(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 34.
- A signed binary's bit length must be equal to a power of 2, as of:
- 21 = 2; 22 = 4; 23 = 8; 24 = 16; 25 = 32; 26 = 64; ...
- The first bit (the leftmost) indicates the sign:
- 0 = positive integer number, 1 = negative integer number
The least number that is:
1) a power of 2
2) and is larger than the actual length, 34,
3) so that the first bit (leftmost) could be zero
(we deal with a positive number at this moment)
=== is: 64.
4. Get the positive binary computer representation on 64 bits (8 Bytes):
If needed, add extra 0s in front (to the left) of the base 2 number, up to the required length, 64.
Decimal Number 10 010 010 396(10) converted to signed binary in one's complement representation: