# LCD of Calculator

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.

LCD of

## How to Find LCD of 990,780,905 ?

Given numbers are 990,780,905

We can find the LCD of numbers 990,780,905 by the prime factorization method or by applying the LCD formula.

The LCD of 990,780,905 is 4658940.

##### Method to Find Least Common Denominator of 990,780,905 with Prime Factorization

 2 990, 780, 905 3 495, 390, 905 5 165, 130, 905 33, 26, 181

As you can see, now we have to multiply the prime numbers on the left side with the co-primes at the bottom.
2 x 3 x 5 x 33 x 26 x 181 = 4658940

Thus, we have determined that the LCD of 990,780,905 is 4658940

### LCD Formula to Find LCD of 990,780,905

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

Step1:

Find the GCF of 990 and 780. To find the GCF, list down the factors of 990 and 780 and select the highest factor that appears in both lists of factors.

990 : [1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990]

780 : [1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780]

From this, we can see that the GCF of 990 and 780 is 30.

Now, put this into the LCD formula.

LCD(990, 780) = ( 990 x 780 ) / 30

LCD(990, 780) = 772200 / 30

LCD(990, 780) = 25740

Step2:

Find the GCF of 25740 and 905. To find the GCF, list down the factors of 25740 and 905 and select the highest factor that appears in both lists of factors.

25740 : [1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 780, 858, 990, 1170, 1287, 1430, 1716, 1980, 2145, 2340, 2574, 2860, 4290, 5148, 6435, 8580, 12870, 25740]

905 : [1, 5, 181, 905]

From this, we can see that the GCF of 25740 and 905 is 5.

Now, put this into the LCD formula.

LCD(25740, 905) = ( 25740 x 905 ) / 5

LCD(25740, 905) = 23294700 / 5

LCD(25740, 905) = 4658940

LCD of 990,780,905 is 4658940

### 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 ?

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 .