1. Divide the number repeatedly by 2:
Keep track of each remainder.
We stop when we get a quotient that is equal to zero.
- division = quotient + remainder;
- 17 052 551 ÷ 2 = 8 526 275 + 1;
- 8 526 275 ÷ 2 = 4 263 137 + 1;
- 4 263 137 ÷ 2 = 2 131 568 + 1;
- 2 131 568 ÷ 2 = 1 065 784 + 0;
- 1 065 784 ÷ 2 = 532 892 + 0;
- 532 892 ÷ 2 = 266 446 + 0;
- 266 446 ÷ 2 = 133 223 + 0;
- 133 223 ÷ 2 = 66 611 + 1;
- 66 611 ÷ 2 = 33 305 + 1;
- 33 305 ÷ 2 = 16 652 + 1;
- 16 652 ÷ 2 = 8 326 + 0;
- 8 326 ÷ 2 = 4 163 + 0;
- 4 163 ÷ 2 = 2 081 + 1;
- 2 081 ÷ 2 = 1 040 + 1;
- 1 040 ÷ 2 = 520 + 0;
- 520 ÷ 2 = 260 + 0;
- 260 ÷ 2 = 130 + 0;
- 130 ÷ 2 = 65 + 0;
- 65 ÷ 2 = 32 + 1;
- 32 ÷ 2 = 16 + 0;
- 16 ÷ 2 = 8 + 0;
- 8 ÷ 2 = 4 + 0;
- 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.
17 052 551(10) = 1 0000 0100 0011 0011 1000 0111(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 25.
- 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, 25,
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 17 052 551(10) converted to signed binary in two's complement representation:
Spaces were used to group digits: for binary, by 4, for decimal, by 3.