LCM of 721, 158, 722, 931
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 721, 158, 722, 931 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 721, 158, 722, 931. So, keep reading to learn more.
Given numbers are 721,158,722,931
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 721,158,722,931 is 287870786.
Find LCM of 721,158,722,931 with Prime Factorization
| 2 | 721, 158, 722, 931 |
| 7 | 721, 79, 361, 931 |
| 19 | 103, 79, 361, 133 |
| 103, 79, 19, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 19 x 103 x 79 x 19 x 7 = 287870786
Therefore, the lowest common multiple of 721,158,722,931 is 287870786.
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.
721 x 158 x 722 x 931 = 76573629076
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.
721 : 1, 7, 103, 721
158 : 1, 2, 79, 158
722 : 1, 2, 19, 38, 361, 722
931 : 1, 7, 19, 49, 133, 931
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 721,158,722,931, is 1.
Now, the common factors can be found like this.
721:7x 103
158:2x 79
722:2x 19x 19
931:7x 7x 19
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 7x 19 = 266
Therefore, the value for common factors is 266.
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 = 76573629076/(1x266)
LCM = 76573629076/266
LCM = 287870786
Thus, we can understand that the LCM of 721,158,722,931 is 287870786.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 721, 158, 722, 931
1. What is the LCM of 721, 158, 722, 931?
Answer: LCM of 721, 158, 722, 931 is 287870786.
2. How to calculate the LCM of 721, 158, 722, 931?
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 721, 158, 722, 931.
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}.