# Convert -646 135 473 to a signed binary in two's complement representation, from a signed integer number in base 10 decimal system

## -646 135 473(10) to a signed binary two's complement representation = ?

### 2. Divide the number repeatedly by 2:

#### We stop when we get a quotient that is equal to zero.

• division = quotient + remainder;
• 646 135 473 ÷ 2 = 323 067 736 + 1;
• 323 067 736 ÷ 2 = 161 533 868 + 0;
• 161 533 868 ÷ 2 = 80 766 934 + 0;
• 80 766 934 ÷ 2 = 40 383 467 + 0;
• 40 383 467 ÷ 2 = 20 191 733 + 1;
• 20 191 733 ÷ 2 = 10 095 866 + 1;
• 10 095 866 ÷ 2 = 5 047 933 + 0;
• 5 047 933 ÷ 2 = 2 523 966 + 1;
• 2 523 966 ÷ 2 = 1 261 983 + 0;
• 1 261 983 ÷ 2 = 630 991 + 1;
• 630 991 ÷ 2 = 315 495 + 1;
• 315 495 ÷ 2 = 157 747 + 1;
• 157 747 ÷ 2 = 78 873 + 1;
• 78 873 ÷ 2 = 39 436 + 1;
• 39 436 ÷ 2 = 19 718 + 0;
• 19 718 ÷ 2 = 9 859 + 0;
• 9 859 ÷ 2 = 4 929 + 1;
• 4 929 ÷ 2 = 2 464 + 1;
• 2 464 ÷ 2 = 1 232 + 0;
• 1 232 ÷ 2 = 616 + 0;
• 616 ÷ 2 = 308 + 0;
• 308 ÷ 2 = 154 + 0;
• 154 ÷ 2 = 77 + 0;
• 77 ÷ 2 = 38 + 1;
• 38 ÷ 2 = 19 + 0;
• 19 ÷ 2 = 9 + 1;
• 9 ÷ 2 = 4 + 1;
• 4 ÷ 2 = 2 + 0;
• 2 ÷ 2 = 1 + 0;
• 1 ÷ 2 = 0 + 1;

## Latest signed integers converted from decimal system to binary two's complement representation

 -646,135,473 to signed binary two's complement = ? Apr 18 09:26 UTC (GMT) 250,099,737,364 to signed binary two's complement = ? Apr 18 09:26 UTC (GMT) 164,311,266,871,028 to signed binary two's complement = ? Apr 18 09:26 UTC (GMT) 42 to signed binary two's complement = ? Apr 18 09:26 UTC (GMT) -1,551 to signed binary two's complement = ? Apr 18 09:26 UTC (GMT) 11,101,106 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) 1,036 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) 266,338,304 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) 5,237,811,932,527,789 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) 105 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) 286,779,883 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) 21,596 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) -1,069,547,243 to signed binary two's complement = ? Apr 18 09:25 UTC (GMT) All decimal integer numbers converted to signed binary two's complement representation

## How to convert signed integers from decimal system to signed binary in two's complement representation

### Follow the steps below to convert a signed base 10 integer number to signed binary in two's complement representation:

• 1. If the number to be converted is negative, start with the positive version of the number.
• 2. Divide repeatedly by 2 the positive representation of the integer number, keeping track of each remainder, until we get a quotient that is zero.
• 3. Construct the base 2 representation of the positive number, by taking all the remainders starting from the bottom of the list constructed above. Thus, the last remainder of the divisions becomes the first symbol (the leftmost) of the base two number, while the first remainder becomes the last symbol (the rightmost).
• 4. Binary numbers represented in computer language must have 4, 8, 16, 32, 64, ... bit length (a power of 2) - if needed, add extra bits on 0 in front (to the left) of the base 2 number above, up to the required length, so that the first bit (the leftmost) will be 0, correctly representing a positive number.
• 5. To get the negative integer number representation in signed binary one's complement, replace all 0 bits with 1s and all 1 bits with 0s (reversing the digits).
• 6. To get the negative integer number, in signed binary two's complement representation, add 1 to the number above.

### Example: convert the negative number -60 from the decimal system (base ten) to signed binary in two's complement:

• 1. Start with the positive version of the number: |-60| = 60
• 2. Divide repeatedly 60 by 2, keeping track of each remainder:
• division = quotient + remainder
• 60 ÷ 2 = 30 + 0
• 30 ÷ 2 = 15 + 0
• 15 ÷ 2 = 7 + 1
• 7 ÷ 2 = 3 + 1
• 3 ÷ 2 = 1 + 1
• 1 ÷ 2 = 0 + 1
• 3. Construct the base 2 representation of the positive number, by taking all the remainders starting from the bottom of the list constructed above:
60(10) = 11 1100(2)
• 4. Bit length of base 2 representation number is 6, so the positive binary computer representation of a signed binary will take in this particular case 8 bits (the least power of 2 larger than 6) - add extra 0 digits in front of the base 2 number, up to the required length:
60(10) = 0011 1100(2)
• 5. To get the negative integer number representation in signed binary one's complement, replace all the 0 bits with 1s and all 1 bits with 0s (reversing the digits):
!(0011 1100) = 1100 0011
• 6. To get the negative integer number, signed binary in two's complement representation, add 1 to the number above:
-60(10) = 1100 0011 + 1 = 1100 0100