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 215,651,356
We can find the LCD of numbers 215,651,356 by the prime factorization method or by applying the LCD formula.
The LCD of 215,651,356 is 49827540.
Given numbers has no common factors except 1. So, there LCD is their product i.e 49827540
The LCD formula is LCD(a,b) = ( a x b) / GCF(a,b)
Step1:
Find the GCF of 215 and 651. To find the GCF, list down the factors of 215 and 651 and select the highest factor that appears in both lists of factors.
215 : [1, 5, 43, 215]
651 : [1, 3, 7, 21, 31, 93, 217, 651]
From this, we can see that the GCF of 215 and 651 is 1.
Now, put this into the LCD formula.
LCD(215, 651) = ( 215 x 651 ) / 1
LCD(215, 651) = 139965 / 1
LCD(215, 651) = 139965
Step2:
Find the GCF of 139965 and 356. To find the GCF, list down the factors of 139965 and 356 and select the highest factor that appears in both lists of factors.
139965 : [1, 3, 5, 7, 15, 21, 31, 35, 43, 93, 105, 129, 155, 215, 217, 301, 465, 645, 651, 903, 1085, 1333, 1505, 3255, 3999, 4515, 6665, 9331, 19995, 27993, 46655, 139965]
356 : [1, 2, 4, 89, 178, 356]
From this, we can see that the GCF of 139965 and 356 is 1.
Now, put this into the LCD formula.
LCD(139965, 356) = ( 139965 x 356 ) / 1
LCD(139965, 356) = 49827540 / 1
LCD(139965, 356) = 49827540
LCD of 215,651,356 is 49827540
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 .