How to find LCD of on a calculator?

You can find LCD of by simply giving the inputs in the input field and clicking on the Calculator button next to it to get the concerned Least Common Denominator.

LCD of Calculator

Q: How to Find the LCD of ?

Least Common Denominator of . Step 1: Divide all the numbers with common prime numbers having remainder zero. Step 2: Then multiply all the prime factors with last row quotient of common division that is LCD() = .

Created By : Jatin Gogia
Reviewed By : Phani Ponnapalli
Last Updated at : Mar 29,2023

Read this article to figure out how to calculate the lowest common denominator of . Learn the two different methods that you can use to find the LCD: the prime factorization method and the LCD formula method. We will explain both these methods in detail so stick around until the very end to understand. Utilise our free LCD Calculator to avail the LCD of numbers easily.

How to Find LCD of 620,685,775 ?

Given numbers are 620,685,775

We can find the LCD of numbers 620,685,775 by the prime factorization method or by applying the LCD formula.

The LCD of 620,685,775 is 424700.

Method to Find Least Common Denominator of 620,685,775 with Prime Factorization

5	620, 685, 775
31	124, 137, 155
	4, 137, 5

As you can see, now we have to multiply the prime numbers on the left side with the co-primes at the bottom.
5 x 31 x 4 x 137 x 5 = 424700

Thus, we have determined that the LCD of 620,685,775 is 424700

LCD Formula to Find LCD of 620,685,775

The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b)

Step1:

Find the GCF of 620 and 685. To find the GCF, list down the factors of 620 and 685 and select the highest factor that appears in both lists of factors.

620 : [1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620]

685 : [1, 5, 137, 685]

From this, we can see that the GCF of 620 and 685 is 5.

Now, put this into the LCD formula.

LCD(620, 685) = ( 620 x 685 ) / 5

LCD(620, 685) = 424700 / 5

LCD(620, 685) = 84940

Step2:

Find the GCF of 84940 and 775. To find the GCF, list down the factors of 84940 and 775 and select the highest factor that appears in both lists of factors.

84940 : [1, 2, 4, 5, 10, 20, 31, 62, 124, 137, 155, 274, 310, 548, 620, 685, 1370, 2740, 4247, 8494, 16988, 21235, 42470, 84940]

775 : [1, 5, 25, 31, 155, 775]

From this, we can see that the GCF of 84940 and 775 is 155.

Now, put this into the LCD formula.

LCD(84940, 775) = ( 84940 x 775 ) / 155

LCD(84940, 775) = 65828500 / 155

LCD(84940, 775) = 424700

LCD of 620,685,775 is 424700

LCD of Numbers Calculation Examples

Here are some samples of LCD of Numbers calculations.

Frequently Asked Questions on LCD of

1. What is the LCD of ?

Answer: LCD of is .

2. How to find LCD of using prime factorization ?

Answer: Just keep dividing by prime numbers until only co-primes are left over. At that point, simply multiply the co-primes with the prime numbers on the left. The answer will be , the LCD.

3. How to Find the LCD of using LCD formula ?

Answer: The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b).

You must first calculate the LCD OF and . Then, find the LCD of that answer and and so on. The answer will be , which is the LCD of .