LCM of 672, 721, 190, 398
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 672, 721, 190, 398 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 672, 721, 190, 398. So, keep reading to learn more.
Given numbers are 672,721,190,398
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 672,721,190,398 is 1308528480.
Find LCM of 672,721,190,398 with Prime Factorization
| 2 | 672, 721, 190, 398 |
| 7 | 336, 721, 95, 199 |
| 48, 103, 95, 199 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 48 x 103 x 95 x 199 = 1308528480
Therefore, the lowest common multiple of 672,721,190,398 is 1308528480.
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.
672 x 721 x 190 x 398 = 36638797440
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.
672 : 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672
721 : 1, 7, 103, 721
190 : 1, 2, 5, 10, 19, 38, 95, 190
398 : 1, 2, 199, 398
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 672,721,190,398, is 1.
Now, the common factors can be found like this.
672:2x 2x 2x 2x 2x 3x 7
721:7x 103
190:2x 5x 19
398:2x 199
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 7 = 28
Therefore, the value for common factors is 28.
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 = 36638797440/(1x28)
LCM = 36638797440/28
LCM = 1308528480
Thus, we can understand that the LCM of 672,721,190,398 is 1308528480.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 672, 721, 190, 398
1. What is the LCM of 672, 721, 190, 398?
Answer: LCM of 672, 721, 190, 398 is 1308528480.
2. How to calculate the LCM of 672, 721, 190, 398?
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 672, 721, 190, 398.
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}.