LCM of 781, 638, 693, 109
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 638, 693, 109 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 781, 638, 693, 109. So, keep reading to learn more.
Given numbers are 781,638,693,109
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,638,693,109 is 311061366.
Find LCM of 781,638,693,109 with Prime Factorization
| 11 | 781, 638, 693, 109 |
| 71, 58, 63, 109 |
Multiply the prime numbers at the bottom and the left side.
11 x 71 x 58 x 63 x 109 = 311061366
Therefore, the lowest common multiple of 781,638,693,109 is 311061366.
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.
781 x 638 x 693 x 109 = 37638425286
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.
781 : 1, 11, 71, 781
638 : 1, 2, 11, 22, 29, 58, 319, 638
693 : 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693
109 : 1, 109
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,638,693,109, is 1.
Now, the common factors can be found like this.
781:11x 71
638:2x 11x 29
693:3x 3x 7x 11
109:109
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
11x 11 = 121
Therefore, the value for common factors is 121.
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 = 37638425286/(1x121)
LCM = 37638425286/121
LCM = 311061366
Thus, we can understand that the LCM of 781,638,693,109 is 311061366.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 781, 638, 693, 109
1. What is the LCM of 781, 638, 693, 109?
Answer: LCM of 781, 638, 693, 109 is 311061366.
2. How to calculate the LCM of 781, 638, 693, 109?
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 781, 638, 693, 109.
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}.