LCM of 748, 620, 398, 421
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 748, 620, 398, 421 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 748, 620, 398, 421. So, keep reading to learn more.
Given numbers are 748,620,398,421
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 748,620,398,421 is 9713337260.
Find LCM of 748,620,398,421 with Prime Factorization
| 2 | 748, 620, 398, 421 |
| 2 | 374, 310, 199, 421 |
| 187, 155, 199, 421 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 187 x 155 x 199 x 421 = 9713337260
Therefore, the lowest common multiple of 748,620,398,421 is 9713337260.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
748 x 620 x 398 x 421 = 77706698080
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
748 : 1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
398 : 1, 2, 199, 398
421 : 1, 421
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 748,620,398,421, is 1.
Now, the common factors can be found like this.
748:2x 2x 11x 17
620:2x 2x 5x 31
398:2x 199
421:421
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 2 = 8
Therefore, the value for common factors is 8.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 77706698080/(1x8)
LCM = 77706698080/8
LCM = 9713337260
Thus, we can understand that the LCM of 748,620,398,421 is 9713337260.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 748, 620, 398, 421
1. What is the LCM of 748, 620, 398, 421?
Answer: LCM of 748, 620, 398, 421 is 9713337260.
2. How to calculate the LCM of 748, 620, 398, 421?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 748, 620, 398, 421.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.