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Last updated on August 21, 2025
582 in binary is written as 1001000110 because the binary system uses only two digits, 0 and 1, to represent numbers. This number system is widely used in computer systems. In this topic, we are going to learn about converting the number 582 to binary.
The process of converting 582 from decimal to binary involves dividing the number 582 by 2. Here, it is getting 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 582 to binary. In the last step, the remainder is noted down from bottom to top, and that becomes the converted value.
For example, the remainders noted down after dividing 582 by 2 until getting 0 as the quotient result in 1001000110. 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 1001000110.
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 1001000110 in binary is indeed 582 in the decimal number system.
582 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 582 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. 2^0 = 1 2^1 = 2 2^2 = 4 2^3 = 8 2^4 = 16 2^5 = 32 2^6 = 64 2^7 = 128 2^8 = 256 2^9 = 512 Since 512 is less than 582, we stop at 2^9 = 512.
Step 2 - Identify the largest power of 2: In the previous step, we stopped at 2^9 = 512. This is because, in this step, we have to identify the largest power of 2, which is less than or equal to the given number, 582. Since 2^9 is the number we are looking for, write 1 in the 2^9 place. Now the value of 2^9, which is 512, is subtracted from 582. 582 - 512 = 70.
Step 3 - Identify the next largest power of 2: In this step, we need to find the largest power of 2 that fits into the result of the previous step, 70. So, the next largest power of 2 is 2^6, which is 64. Now, we have to write 1 in the 2^6 place. And then subtract 64 from 70. 70 - 64 = 6.
Step 4 - Identify the next largest power of 2: Now, we need the largest power of 2 that can fit into 6. This is 2^2, which is 4. Write 1 in the 2^2 place, and subtract 4 from 6. 6 - 4 = 2.
Step 5 - Identify the next largest power of 2: The next largest power of 2 that fits into 2 is 2^1, which is 2. Write 1 in the 2^1 place, and subtract 2 from 2. 2 - 2 = 0. We need to stop the process here since the remainder is 0.
Step 6 - Identify the unused place values: In steps 2 to 5, we wrote 1 in the 2^9, 2^6, 2^2, and 2^1 places. Now, we can just write 0s in the remaining places. Now, by substituting the values, we get, 0 in the 2^0 place 1 in the 2^1 place 1 in the 2^2 place 0 in the 2^3 place 0 in the 2^4 place 0 in the 2^5 place 1 in the 2^6 place 0 in the 2^7 place 0 in the 2^8 place 1 in the 2^9 place
Step 7 - Write the values in reverse order: Therefore, 1001000110 is 582 in binary.
Grouping Method: In this method, we divide the number 582 by 2. Let us see the step-by-step conversion.
Step 1 - Divide the given number 582 by 2. 582 / 2 = 291. Here, 291 is the quotient and 0 is the remainder.
Step 2 - Divide the previous quotient (291) by 2. 291 / 2 = 145. Here, the quotient is 145 and the remainder is 1.
Step 3 - Repeat the previous step. 145 / 2 = 72. Now, the quotient is 72, and 1 is the remainder.
Step 4 - Repeat the previous step. 72 / 2 = 36. Here, the remainder is 0. Step 5 - Repeat the previous step. 36 / 2 = 18. Here, the remainder is 0.
Step 6 - Repeat the previous step. 18 / 2 = 9. Here, the remainder is 0.
Step 7 - Repeat the previous step. 9 / 2 = 4. Now, the remainder is 1. Step 8 - Repeat the previous step. 4 / 2 = 2. Here, the remainder is 0.
Step 9 - Repeat the previous step. 2 / 2 = 1. Here, the remainder is 0.
Step 10 - Repeat the previous step. 1 / 2 = 0. Here, the remainder is 1. We stop the division here because the quotient is 0.
Step 11 - Write down the remainders from bottom to top. Therefore, 582 (decimal) = 1001000110 (binary).
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 582. Since the answer is 2^9, write 1 next to this power of 2. Subtract the value (512) from 582. So, 582 - 512 = 70. Find the largest power of 2 less than or equal to 70. The answer is 2^6. So, write 1 next to this power. Now, 70 - 64 = 6. Find the largest power of 2 less than or equal to 6. The answer is 2^2. So, write 1 next to this power. Now, 6 - 4 = 2. Find the largest power of 2 less than or equal to 2. The answer is 2^1. So, write 1 next to this power. Now, 2 - 2 = 0. Since there is no remainder, we can write 0 next to the remaining powers (2^0, 2^3, 2^4, 2^5, 2^7, 2^8). Final conversion will be 1001000110.
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, 582 is divided by 2 to get 291 as the quotient and 0 as the remainder. Now, 291 is divided by 2. Here, we will get 145 as the quotient and 1 as the remainder. Dividing 145 by 2, we get 72 as the quotient and 1 as the remainder. Continue dividing each quotient by 2 until the quotient becomes 0. Now, we write the remainders upside down to get the binary equivalent of 582, 1001000110.
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., 2^9, 2^8, 2^7, and so on. Find the largest power that fits into 582. 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 582, we use 1s for 2^9, 2^6, 2^2, and 2^1, and 0s for all other powers.
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 582. Memorize to speed up conversions: We can memorize the binary forms for smaller numbers to speed up the conversion process.
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 example, 582 is even, and its binary form is 1001000110, which ends in 0. If the number is odd, then its binary equivalent will end 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 582 from decimal to binary using the place value method.
1001000110
2^9 is the largest power of 2, which is less than or equal to 582. So place 1 next to 2^9. Subtracting 512 from 582, we get 70. So the next largest power would be 2^6. So place another 1 next to 2^6. Now, subtracting 64 from 70, we get 6. The next power is 2^2. So place 1 next to 2^2 and subtract 4 from 6 to get 2. The last power is 2^1; place 1 next to 2^1 and subtract 2 from 2 to get 0. Fill in 0s for unused powers of 2. By using this method, we find the binary form of 582.
Convert 582 from decimal to binary using the division by 2 method.
1001000110
Divide 582 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 582 to binary using the representation method.
1001000110
Break the number 582 into powers of 2 and find the largest powers of 2. We get 2^9. So 1 is placed next to 2^9. Next, 582 - 512 = 70. Now, the largest power of 2 is 2^6. Once again, 1 is placed next to 2^6. Now, 70 - 64 = 6. Next, 2^2 fits, so place 1 next to 2^2. Then, 6 - 4 = 2. Finally, 2^1 fits, so place 1 next to 2^1. After getting 0, fill in with zeros for unused powers of 2. By following this method, we get the binary value of 582 as 1001000110.
How is 582 written in decimal, octal, and binary form?
Decimal form - 582 Octal - 1116 Binary - 1001000110
The decimal system is also called the base 10 system. In this system, 582 is written as 582 only. We have already seen how 582 is written as 1001000110 in binary. So, let us focus on the octal system, which is base 8. To convert 582 to octal, we need to divide 582 by 8. So, 582 / 8 = 72 with 6 as the remainder. In the next step, divide the quotient from the previous step (72) by 8. So, 72 / 8 = 9 with 0 as the remainder. Finally, divide 9 by 8 to get 1 as the quotient and 1 as the remainder. The division process stops here because the quotient is now 0. Here, 1, 0, and 6 are the remainders, and they have to be written in reverse order. So, 1116 is the octal equivalent of 582.
Express 582 - 5 in binary.
1000111111
582 - 5 = 577 So, we need to write 577 in binary. Start by dividing 577 by 2. We get 288 as the quotient and 1 as the remainder. Next, divide 288 by 2. Now, we get 144 as the quotient and 0 as the remainder. Continue dividing by 2 until you reach a quotient of 0. Write the remainders from bottom to top to get 1000111111 (binary of 577).
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.