Signed: Integer ↗ Binary: -9 185 794 525 094 739 980 Convert the Integer Number to a Signed Binary. Converting and Writing the Base Ten Decimal System Signed Integer as Binary Code (Written in Base Two)

Signed integer number -9 185 794 525 094 739 980(10)
converted and written as a signed binary (base 2) = ?

1. Start with the positive version of the number:

|-9 185 794 525 094 739 980| = 9 185 794 525 094 739 980

2. 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;
  • 9 185 794 525 094 739 980 ÷ 2 = 4 592 897 262 547 369 990 + 0;
  • 4 592 897 262 547 369 990 ÷ 2 = 2 296 448 631 273 684 995 + 0;
  • 2 296 448 631 273 684 995 ÷ 2 = 1 148 224 315 636 842 497 + 1;
  • 1 148 224 315 636 842 497 ÷ 2 = 574 112 157 818 421 248 + 1;
  • 574 112 157 818 421 248 ÷ 2 = 287 056 078 909 210 624 + 0;
  • 287 056 078 909 210 624 ÷ 2 = 143 528 039 454 605 312 + 0;
  • 143 528 039 454 605 312 ÷ 2 = 71 764 019 727 302 656 + 0;
  • 71 764 019 727 302 656 ÷ 2 = 35 882 009 863 651 328 + 0;
  • 35 882 009 863 651 328 ÷ 2 = 17 941 004 931 825 664 + 0;
  • 17 941 004 931 825 664 ÷ 2 = 8 970 502 465 912 832 + 0;
  • 8 970 502 465 912 832 ÷ 2 = 4 485 251 232 956 416 + 0;
  • 4 485 251 232 956 416 ÷ 2 = 2 242 625 616 478 208 + 0;
  • 2 242 625 616 478 208 ÷ 2 = 1 121 312 808 239 104 + 0;
  • 1 121 312 808 239 104 ÷ 2 = 560 656 404 119 552 + 0;
  • 560 656 404 119 552 ÷ 2 = 280 328 202 059 776 + 0;
  • 280 328 202 059 776 ÷ 2 = 140 164 101 029 888 + 0;
  • 140 164 101 029 888 ÷ 2 = 70 082 050 514 944 + 0;
  • 70 082 050 514 944 ÷ 2 = 35 041 025 257 472 + 0;
  • 35 041 025 257 472 ÷ 2 = 17 520 512 628 736 + 0;
  • 17 520 512 628 736 ÷ 2 = 8 760 256 314 368 + 0;
  • 8 760 256 314 368 ÷ 2 = 4 380 128 157 184 + 0;
  • 4 380 128 157 184 ÷ 2 = 2 190 064 078 592 + 0;
  • 2 190 064 078 592 ÷ 2 = 1 095 032 039 296 + 0;
  • 1 095 032 039 296 ÷ 2 = 547 516 019 648 + 0;
  • 547 516 019 648 ÷ 2 = 273 758 009 824 + 0;
  • 273 758 009 824 ÷ 2 = 136 879 004 912 + 0;
  • 136 879 004 912 ÷ 2 = 68 439 502 456 + 0;
  • 68 439 502 456 ÷ 2 = 34 219 751 228 + 0;
  • 34 219 751 228 ÷ 2 = 17 109 875 614 + 0;
  • 17 109 875 614 ÷ 2 = 8 554 937 807 + 0;
  • 8 554 937 807 ÷ 2 = 4 277 468 903 + 1;
  • 4 277 468 903 ÷ 2 = 2 138 734 451 + 1;
  • 2 138 734 451 ÷ 2 = 1 069 367 225 + 1;
  • 1 069 367 225 ÷ 2 = 534 683 612 + 1;
  • 534 683 612 ÷ 2 = 267 341 806 + 0;
  • 267 341 806 ÷ 2 = 133 670 903 + 0;
  • 133 670 903 ÷ 2 = 66 835 451 + 1;
  • 66 835 451 ÷ 2 = 33 417 725 + 1;
  • 33 417 725 ÷ 2 = 16 708 862 + 1;
  • 16 708 862 ÷ 2 = 8 354 431 + 0;
  • 8 354 431 ÷ 2 = 4 177 215 + 1;
  • 4 177 215 ÷ 2 = 2 088 607 + 1;
  • 2 088 607 ÷ 2 = 1 044 303 + 1;
  • 1 044 303 ÷ 2 = 522 151 + 1;
  • 522 151 ÷ 2 = 261 075 + 1;
  • 261 075 ÷ 2 = 130 537 + 1;
  • 130 537 ÷ 2 = 65 268 + 1;
  • 65 268 ÷ 2 = 32 634 + 0;
  • 32 634 ÷ 2 = 16 317 + 0;
  • 16 317 ÷ 2 = 8 158 + 1;
  • 8 158 ÷ 2 = 4 079 + 0;
  • 4 079 ÷ 2 = 2 039 + 1;
  • 2 039 ÷ 2 = 1 019 + 1;
  • 1 019 ÷ 2 = 509 + 1;
  • 509 ÷ 2 = 254 + 1;
  • 254 ÷ 2 = 127 + 0;
  • 127 ÷ 2 = 63 + 1;
  • 63 ÷ 2 = 31 + 1;
  • 31 ÷ 2 = 15 + 1;
  • 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:

Take all the remainders starting from the bottom of the list constructed above.


9 185 794 525 094 739 980(10) = 111 1111 0111 1010 0111 1111 0111 0011 1100 0000 0000 0000 0000 0000 0000 1100(2)


4. Determine the signed binary number bit length:

The base 2 number's actual length, in bits: 63.


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) is reserved for 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, 63,

3) so that the first bit (leftmost) could be zero
(we deal with a positive number at this moment)


=== is: 64.


5. Get the positive binary computer representation on 64 bits (8 Bytes):

If needed, add extra 0s in front (to the left) of the base 2 number, up to the required length, 64:


9 185 794 525 094 739 980(10) = 0111 1111 0111 1010 0111 1111 0111 0011 1100 0000 0000 0000 0000 0000 0000 1100


6. Get the negative integer number representation:

To get the negative integer number representation on 64 bits (8 Bytes),


... change the first bit (the leftmost), from 0 to 1...


Number -9 185 794 525 094 739 980(10), a signed integer number (with sign),
converted from decimal system (from base 10)
and written as a signed binary (in base 2):

-9 185 794 525 094 739 980(10) = 1111 1111 0111 1010 0111 1111 0111 0011 1100 0000 0000 0000 0000 0000 0000 1100

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

The latest signed integer numbers (that are written in decimal system, in base ten) converted and written as signed binary numbers

How to convert signed integers from decimal system to binary code system

Follow the steps below to convert a signed base ten integer number to signed binary:

  • 1. In a signed binary, first bit (the leftmost) is reserved for sign: 0 = positive integer number, 1 = positive integer number. If the number to be converted is negative, start with its positive version.
  • 2. Divide repeatedly by 2 the positive integer number keeping track of each remainder. STOP when 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 have a length of 4, 8, 16, 32, 64, ... bits (power of 2) - if needed, fill in extra '0' bits in front of the base 2 number (to the left), up to the right length; this way the first bit (the leftmost one) is always '0', as for a positive representation.
  • 5. To get the negative reprezentation of the number, simply switch the first bit (the leftmost one), from '0' to '1'.

Example: convert the negative number -63 from decimal system (base ten) to signed binary code system:

  • 1. Start with the positive version of the number: |-63| = 63;
  • 2. Divide repeatedly 63 by 2, keeping track of each remainder, until we get a quotient that is equal to zero:
    • division = quotient + remainder
    • 63 ÷ 2 = 31 + 1
    • 31 ÷ 2 = 15 + 1
    • 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:
    63(10) = 11 1111(2)
  • 4. The actual length of base 2 representation number is 6, so the positive binary computer representation length of the signed binary will take in this case 8 bits (the least power of 2 higher than 6) - add extra '0's in front (to the left), up to the required length; this way the first bit (the leftmost one) is to be '0', as for a positive number:
    63(10) = 0011 1111(2)
  • 5. To get the negative integer number representation simply change the first bit (the leftmost), from '0' to '1':
    -63(10) = 1011 1111
  • Number -63(10), signed integer, converted from decimal system (base 10) to signed binary = 1011 1111