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;
- 841 823 017 ÷ 2 = 420 911 508 + 1;
- 420 911 508 ÷ 2 = 210 455 754 + 0;
- 210 455 754 ÷ 2 = 105 227 877 + 0;
- 105 227 877 ÷ 2 = 52 613 938 + 1;
- 52 613 938 ÷ 2 = 26 306 969 + 0;
- 26 306 969 ÷ 2 = 13 153 484 + 1;
- 13 153 484 ÷ 2 = 6 576 742 + 0;
- 6 576 742 ÷ 2 = 3 288 371 + 0;
- 3 288 371 ÷ 2 = 1 644 185 + 1;
- 1 644 185 ÷ 2 = 822 092 + 1;
- 822 092 ÷ 2 = 411 046 + 0;
- 411 046 ÷ 2 = 205 523 + 0;
- 205 523 ÷ 2 = 102 761 + 1;
- 102 761 ÷ 2 = 51 380 + 1;
- 51 380 ÷ 2 = 25 690 + 0;
- 25 690 ÷ 2 = 12 845 + 0;
- 12 845 ÷ 2 = 6 422 + 1;
- 6 422 ÷ 2 = 3 211 + 0;
- 3 211 ÷ 2 = 1 605 + 1;
- 1 605 ÷ 2 = 802 + 1;
- 802 ÷ 2 = 401 + 0;
- 401 ÷ 2 = 200 + 1;
- 200 ÷ 2 = 100 + 0;
- 100 ÷ 2 = 50 + 0;
- 50 ÷ 2 = 25 + 0;
- 25 ÷ 2 = 12 + 1;
- 12 ÷ 2 = 6 + 0;
- 6 ÷ 2 = 3 + 0;
- 3 ÷ 2 = 1 + 1;
- 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.
841 823 017(10) = 11 0010 0010 1101 0011 0011 0010 1001(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 30.
- 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, 30,
3) so that the first bit (leftmost) could be zero
(we deal with a positive number at this moment)
=== is: 32.
4. Get the positive binary computer representation on 32 bits (4 Bytes):
If needed, add extra 0s in front (to the left) of the base 2 number, up to the required length, 32.
Decimal Number 841 823 017(10) converted to signed binary in one's complement representation: