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Last updated on August 26, 2025
1313 in binary is expressed as 10100100001 because the binary system uses only two digits, 0 and 1, to represent numbers. This number system is used widely in computer systems. In this topic, we are going to learn about converting 1313 to the binary system.
The process of converting 1313 from decimal to binary involves dividing the number 1313 by 2. It is divided by 2 because the binary number system uses only 2 digits, 0 and 1. The quotient becomes the dividend in the next step, and the process continues until the quotient becomes 0.
This is a commonly used method to convert 1313 to binary. In the last step, the remainder is noted down bottom side up, and that becomes the converted value.
For example, the remainders noted down after dividing 1313 by 2 until getting 0 as the quotient result in 10100100001. Remember, the remainders here have been written upside down.
In the table shown below, the first column shows the binary digits (1 and 0) as 10100100001.
The second column represents the place values of each digit, and the third column is the value calculation, where the binary digits are multiplied by their corresponding place values.
The results of the third column can be added to cross-check if 10100100001 in binary is indeed 1313 in the decimal number system.
1313 can be converted easily from decimal to binary. The methods mentioned below will help us convert the number. Let’s see how it is done.
Expansion Method: Let us see the step-by-step process of converting 1313 using the expansion method.
Step 1 - Figure out the place values: In the binary system, each place value is a power of 2. Therefore, in the first step, we will ascertain the powers of 2. 20 = 1 21 = 2 22 = 4 23 = 8 24 = 16 25 = 32 26 = 64 27 = 128 28 = 256 29 = 512 210 = 1024 Since 1024 is the largest power less than 1313, we use it to start.
Step 2 - Identify the largest power of 2: In the previous step, we stopped at 210 = 1024. This is because we have to identify the largest power of 2, which is less than or equal to the given number, 1313. Since 210 is the number we are looking for, write 1 in the 210 place. Now subtract the value of 210, which is 1024, from 1313. 1313 - 1024 = 289.
Step 3 - Identify the next largest power of 2: In this step, we need to find the largest power of 2 that fits into 289. The next largest power of 2 is 28, which is 256. Write 1 in the 28 place. Subtract 256 from 289. 289 - 256 = 33.
Step 4 - Repeat the process: Continue finding the next largest powers of 2 that fit into the remainder, 33. The powers are 25 = 32 and 20 = 1. Write 1 in the 25 and 20 places. Subtract the corresponding values from the remainder. 33 - 32 = 1. 1 - 1 = 0.
Step 5 - Fill in the remaining powers: Write 0s in the places that were not used, which are 29, 27, 26, 24, 23, 22, and 21. Now, by substituting the values, we get: 0 in the 29 place 1 in the 28 place 0 in the 27 place 0 in the 26 place 1 in the 25 place 0 in the 24 place 0 in the 23 place 0 in the 22 place 0 in the 21 place 1 in the 20 place
Step 6 - Write the values in sequence: The binary representation of 1313 is 10100100001.
Grouping Method: In this method, we divide the number 1313 by 2. Let us see the step-by-step conversion.
Step 1 - Divide the given number 1313 by 2. 1313 / 2 = 656 with a remainder of 1.
Step 2 - Divide the previous quotient (656) by 2. 656 / 2 = 328 with a remainder of 0.
Step 3 - Repeat the previous step. 328 / 2 = 164 with a remainder of 0.
Step 4 - Repeat the previous step. 164 / 2 = 82 with a remainder of 0.
Step 5 - Continue the process until the quotient becomes 0. 82 / 2 = 41 with a remainder of 0. 41 / 2 = 20 with a remainder of 1. 20 / 2 = 10 with a remainder of 0. 10 / 2 = 5 with a remainder of 0. 5 / 2 = 2 with a remainder of 1. 2 / 2 = 1 with a remainder of 0. 1 / 2 = 0 with a remainder of 1.
Step 6 - Write down the remainders from bottom to top. The binary equivalent of 1313 is 10100100001.
There are certain rules to follow when converting any number to binary. Some of them are mentioned below:
This is one of the most commonly used rules to convert any number to binary. The place value method is the same as the expansion method, where we need to find the largest power of 2. Let’s see a brief step-by-step explanation to understand the first rule. Find the largest power of 2 less than or equal to 1313. Since the answer is 210, write 1 next to this power of 2. Subtract the value (1024) from 1313. So, 1313 - 1024 = 289. Find the largest power of 2 less than or equal to 289. The answer is 28. So, write 1 next to this power. Now, continue this process with the remainders until you reach 0. Final conversion will be 10100100001.
The division by 2 method is the same as the grouping method. A brief step-by-step explanation is given below for better understanding. First, 1313 is divided by 2 to get 656 as the quotient and 1 as the remainder. Now, 656 is divided by 2. Here, we will get 328 as the quotient and 0 as the remainder. Continue dividing the quotient by 2 until the quotient becomes 0. Write the remainders upside down to get the binary equivalent of 1313, which is 10100100001.
This rule also involves breaking the number into powers of 2. Identify the powers of 2 and write them down in decreasing order, i.e., 210, 29, 28, etc. Find the largest power that fits into 1313. Repeat the process and allocate 1s and 0s to the suitable powers of 2. Combine the digits (0 and 1) to get the binary result.
The limitation of the binary system is that only 0s and 1s can be used to represent numbers. The system doesn’t use any other digits other than 0 and 1. This is a base 2 number system, where the binary places represent powers of 2. So, every digit is either a 0 or a 1. To convert 1313, we use 0s for the unused powers of 2.
Learning a few tips and tricks is a great way to solve any mathematical problems easily. Let us take a look at some tips and tricks for binary numbers up to 1313.
Memorize to speed up conversions: We can memorize the binary forms for numbers like 1 to 20 and beyond.
Recognize the patterns: There is a peculiar pattern when converting numbers from decimal to binary. 1 → 1 1 + 1 = 2 → 10 2 + 2 = 4 → 100 4 + 4 = 8 → 1000 8 + 8 = 16 → 10000 16 + 16 = 32 → 100000…and so on. This is also called the double and add rule.
Even and odd rule: Whenever a number is even, its binary form will end in 0. For instance, 1312 is even, and its binary form ends in 0. If the number is odd, then its binary equivalent will end in 1. For instance, the binary of 1313 ends in 1.
Cross-verify the answers: Once the conversion is done, we can cross-verify the answers by converting the number back to the decimal form. This will eliminate any unforeseen errors in conversion.
Practice by using tables: Writing the decimal numbers and their binary equivalents on a table will help us remember the conversions.
Here, let us take a look at some of the most commonly made mistakes while converting numbers to binary.
Convert 1313 from decimal to binary using the place value method.
10100100001
210 is the largest power of 2, which is less than or equal to 1313.
So place 1 next to 210.
Subtracting 1024 from 1313, we get 289.
So the next largest power would be 28.
So place another 1 next to 28.
Continue this process with the remainders until you reach 0.
By using this method, we can find the binary form of 1313.
Convert 1313 from decimal to binary using the division by 2 method.
10100100001
Divide 1313 by 2.
In the next step, the quotient becomes the new dividend.
Continue the process until the quotient becomes 0.
Now, write the remainders upside down to get the final result.
Convert 1313 to binary using the representation method.
10100100001
Break the number 1313 into powers of 2 and find the largest powers of 2.
We get 210.
So 1 is placed next to 210.
Next, 1313 - 1024 = 289.
Now, the largest power of 2 is 28.
Once again, 1 is placed next to 28.
Continue this process with the remainders until you reach 0.
After getting 0, fill in with zeros for unused powers of 2.
By following this method, we get the binary value of 1313 as 10100100001.
How is 1313 written in decimal, octal, and binary form?
Decimal form - 1313 Octal - 2441 Binary - 10100100001
The decimal system is also called the base 10 system.
In this system, 1313 is written as 1313 only.
We have already seen how 1313 is written as 10100100001 in binary.
So, let us focus on the octal system, which is base 8.
To convert 1313 to octal, we need to divide 1313 by 8.
So 1313 / 8 = 164 with 1 as the remainder.
In the next step, divide the quotient from the previous step (164) by 8.
So 164 / 8 = 20 with 4 as the remainder.
Finally, divide 20 by 8 to get 2 as the quotient and 4 as the remainder.
The division process stops here because the quotient is now 0.
Here, 4, 4, and 1 are the remainders, and they have to be written in reverse order.
So, 2441 is the octal equivalent of 1313.
Express 1313 - 10 in binary.
10100011011
1313 - 10 = 1303 So, we need to write 1303 in binary.
Start by dividing 1303 by 2.
We get 651 as the quotient and 1 as the remainder.
Next, divide 651 by 2.
Now we get 325 as the quotient and 1 as the remainder.
Continue this process until the quotient becomes 0.
Write the remainders from bottom to top to get 10100011011 (binary of 1303).
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.