LCM of 721, 429, 931, 624, 645
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 721, 429, 931, 624, 645 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, 429, 931, 624, 645. So, keep reading to learn more.
Given numbers are 721,429,931,624,645
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 721,429,931,624,645 is 141515053680.
Find LCM of 721,429,931,624,645 with Prime Factorization
| 3 | 721, 429, 931, 624, 645 |
| 7 | 721, 143, 931, 208, 215 |
| 13 | 103, 143, 133, 208, 215 |
| 103, 11, 133, 16, 215 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 13 x 103 x 11 x 133 x 16 x 215 = 141515053680
Therefore, the lowest common multiple of 721,429,931,624,645 is 141515053680.
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 429 x 931 x 624 x 645 = 115900828963920
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
429 : 1, 3, 11, 13, 33, 39, 143, 429
931 : 1, 7, 19, 49, 133, 931
624 : 1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624
645 : 1, 3, 5, 15, 43, 129, 215, 645
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 721,429,931,624,645, is 1.
Now, the common factors can be found like this.
721:7x 103
429:3x 11x 13
931:7x 7x 19
624:2x 2x 2x 2x 3x 13
645:3x 5x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 7x 13 = 819
Therefore, the value for common factors is 819.
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 = 115900828963920/(1x819)
LCM = 115900828963920/819
LCM = 141515053680
Thus, we can understand that the LCM of 721,429,931,624,645 is 141515053680.
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FAQs on LCM of 721, 429, 931, 624, 645
1. What is the LCM of 721, 429, 931, 624, 645?
Answer: LCM of 721, 429, 931, 624, 645 is 141515053680.
2. How to calculate the LCM of 721, 429, 931, 624, 645?
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, 429, 931, 624, 645.
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}.