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.
Given numbers are 401,987,813
We can find the LCD of numbers 401,987,813 by the prime factorization method or by applying the LCD formula.
The LCD of 401,987,813 is 107258277.
3 | 401, 987, 813 |
401, 329, 271 |
As you can see, now we have to multiply the prime numbers on the left side with the co-primes at the bottom.
3 x 401 x 329 x 271 = 107258277
Thus, we have determined that the LCD of 401,987,813 is 107258277
The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b)
Step1:
Find the GCF of 401 and 987. To find the GCF, list down the factors of 401 and 987 and select the highest factor that appears in both lists of factors.
401 : [1, 401]
987 : [1, 3, 7, 21, 47, 141, 329, 987]
From this, we can see that the GCF of 401 and 987 is 1.
Now, put this into the LCD formula.
LCD(401, 987) = ( 401 x 987 ) / 1
LCD(401, 987) = 395787 / 1
LCD(401, 987) = 395787
Step2:
Find the GCF of 395787 and 813. To find the GCF, list down the factors of 395787 and 813 and select the highest factor that appears in both lists of factors.
395787 : [1, 3, 7, 21, 47, 141, 329, 401, 987, 1203, 2807, 8421, 18847, 56541, 131929, 395787]
813 : [1, 3, 271, 813]
From this, we can see that the GCF of 395787 and 813 is 3.
Now, put this into the LCD formula.
LCD(395787, 813) = ( 395787 x 813 ) / 3
LCD(395787, 813) = 321774831 / 3
LCD(395787, 813) = 107258277
LCD of 401,987,813 is 107258277
Here are some samples of LCD of Numbers calculations.
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 .