Convert 101 110 101 to a signed binary in one's complement representation, from a base 10 decimal system signed integer number

101 110 101(10) to a signed binary one's complement representation = ?

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;
  • 101 110 101 ÷ 2 = 50 555 050 + 1;
  • 50 555 050 ÷ 2 = 25 277 525 + 0;
  • 25 277 525 ÷ 2 = 12 638 762 + 1;
  • 12 638 762 ÷ 2 = 6 319 381 + 0;
  • 6 319 381 ÷ 2 = 3 159 690 + 1;
  • 3 159 690 ÷ 2 = 1 579 845 + 0;
  • 1 579 845 ÷ 2 = 789 922 + 1;
  • 789 922 ÷ 2 = 394 961 + 0;
  • 394 961 ÷ 2 = 197 480 + 1;
  • 197 480 ÷ 2 = 98 740 + 0;
  • 98 740 ÷ 2 = 49 370 + 0;
  • 49 370 ÷ 2 = 24 685 + 0;
  • 24 685 ÷ 2 = 12 342 + 1;
  • 12 342 ÷ 2 = 6 171 + 0;
  • 6 171 ÷ 2 = 3 085 + 1;
  • 3 085 ÷ 2 = 1 542 + 1;
  • 1 542 ÷ 2 = 771 + 0;
  • 771 ÷ 2 = 385 + 1;
  • 385 ÷ 2 = 192 + 1;
  • 192 ÷ 2 = 96 + 0;
  • 96 ÷ 2 = 48 + 0;
  • 48 ÷ 2 = 24 + 0;
  • 24 ÷ 2 = 12 + 0;
  • 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.

101 110 101(10) = 110 0000 0110 1101 0001 0101 0101(2)


3. Determine the signed binary number bit length:

The base 2 number's actual length, in bits: 27.

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; ...

First bit (the leftmost) indicates the sign,
1 = negative, 0 = positive.

The least number that is:


a power of 2


and is larger than the actual length, 27,


so that the first bit (leftmost) could be zero


(we deal with a positive number at this moment)


is: 32.


4. 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:

101 110 101(10) = 0000 0110 0000 0110 1101 0001 0101 0101


Number 101 110 101, a signed integer, converted from decimal system (base 10) to a signed binary one's complement representation:

101 110 101(10) = 0000 0110 0000 0110 1101 0001 0101 0101

Spaces used to group digits: for binary, by 4; for decimal, by 3.


More operations of this kind:

101 110 100 = ? | 101 110 102 = ?


Convert signed integer numbers from the decimal system (base ten) to signed binary one's complement representation

How to convert a base 10 signed integer number to signed binary in one's complement representation:

1) Divide the positive version of number repeatedly by 2, keeping track of each remainder, till getting a quotient that is 0.

2) Construct the base 2 representation by taking the previously calculated remainders starting from the last remainder up to the first one, in that order.

3) Construct the positive binary computer representation so that the first bit is 0.

4) Only if the initial number is negative, switch all the bits from 0 to 1 and from 1 to 0 (reversing the digits).

Latest signed integer numbers converted from decimal system to signed binary in one's complement representation

101,110,101 to signed binary one's complement = ? May 12 08:01 UTC (GMT)
-37 to signed binary one's complement = ? May 12 08:01 UTC (GMT)
11,100,991 to signed binary one's complement = ? May 12 08:01 UTC (GMT)
-27,038 to signed binary one's complement = ? May 12 07:59 UTC (GMT)
1,241,513,975 to signed binary one's complement = ? May 12 07:59 UTC (GMT)
110,010,099 to signed binary one's complement = ? May 12 07:59 UTC (GMT)
6,005,202,039,100,000,001 to signed binary one's complement = ? May 12 07:59 UTC (GMT)
17,487 to signed binary one's complement = ? May 12 07:58 UTC (GMT)
1,010,109,998 to signed binary one's complement = ? May 12 07:58 UTC (GMT)
-9,333,897 to signed binary one's complement = ? May 12 07:58 UTC (GMT)
454 to signed binary one's complement = ? May 12 07:57 UTC (GMT)
3,123 to signed binary one's complement = ? May 12 07:57 UTC (GMT)
10,101,110,101 to signed binary one's complement = ? May 12 07:56 UTC (GMT)
All decimal integer numbers converted to signed binary one's complement representation

How to convert signed integers from the decimal system to signed binary in one's complement representation

Follow the steps below to convert a signed base 10 integer number to signed binary in one'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 that is to be converted to binary, keeping track of each remainder, until we get a quotient that is equal to 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, fill in '0' bits in front (to the left) of the base 2 number calculated above, up to the right length; this way the first bit (leftmost) will always 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 '1's and all '1' bits with '0's.

Example: convert the negative number -49 from the decimal system (base ten) to signed binary one's complement:

  • 1. Start with the positive version of the number: |-49| = 49
  • 2. Divide repeatedly 49 by 2, keeping track of each remainder:
    • division = quotient + remainder
    • 49 ÷ 2 = 24 + 1
    • 24 ÷ 2 = 12 + 0
    • 12 ÷ 2 = 6 + 0
    • 6 ÷ 2 = 3 + 0
    • 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:
    49(10) = 11 0001(2)
  • 4. The actual bit length of base 2 representation is 6, so the positive binary computer representation of a signed binary will take in this case 8 bits (the least power of 2 that is larger than 6) - add '0's in front of the base 2 number, up to the required length:
    49(10) = 0011 0001(2)
  • 5. To get the negative integer number representation in signed binary one's complement, replace all '0' bits with '1's and all '1' bits with '0's:
    -49(10) = 1100 1110
  • Number -49(10), signed integer, converted from the decimal system (base 10) to signed binary in one's complement representation = 1100 1110