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;
- 24 041 917 ÷ 2 = 12 020 958 + 1;
- 12 020 958 ÷ 2 = 6 010 479 + 0;
- 6 010 479 ÷ 2 = 3 005 239 + 1;
- 3 005 239 ÷ 2 = 1 502 619 + 1;
- 1 502 619 ÷ 2 = 751 309 + 1;
- 751 309 ÷ 2 = 375 654 + 1;
- 375 654 ÷ 2 = 187 827 + 0;
- 187 827 ÷ 2 = 93 913 + 1;
- 93 913 ÷ 2 = 46 956 + 1;
- 46 956 ÷ 2 = 23 478 + 0;
- 23 478 ÷ 2 = 11 739 + 0;
- 11 739 ÷ 2 = 5 869 + 1;
- 5 869 ÷ 2 = 2 934 + 1;
- 2 934 ÷ 2 = 1 467 + 0;
- 1 467 ÷ 2 = 733 + 1;
- 733 ÷ 2 = 366 + 1;
- 366 ÷ 2 = 183 + 0;
- 183 ÷ 2 = 91 + 1;
- 91 ÷ 2 = 45 + 1;
- 45 ÷ 2 = 22 + 1;
- 22 ÷ 2 = 11 + 0;
- 11 ÷ 2 = 5 + 1;
- 5 ÷ 2 = 2 + 1;
- 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.
24 041 917(10) = 1 0110 1110 1101 1001 1011 1101(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 24 041 917(10) converted to signed binary in two's complement representation:
Spaces were used to group digits: for binary, by 4, for decimal, by 3.