LCM of 671, 786, 781, 560, 749
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 671, 786, 781, 560, 749 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 671, 786, 781, 560, 749. So, keep reading to learn more.
Given numbers are 671,786,781,560,749
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 671,786,781,560,749 is 1121876946960.
Find LCM of 671,786,781,560,749 with Prime Factorization
| 2 | 671, 786, 781, 560, 749 |
| 7 | 671, 393, 781, 280, 749 |
| 11 | 671, 393, 781, 40, 107 |
| 61, 393, 71, 40, 107 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 11 x 61 x 393 x 71 x 40 x 107 = 1121876946960
Therefore, the lowest common multiple of 671,786,781,560,749 is 1121876946960.
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.
671 x 786 x 781 x 560 x 749 = 172769049831840
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.
671 : 1, 11, 61, 671
786 : 1, 2, 3, 6, 131, 262, 393, 786
781 : 1, 11, 71, 781
560 : 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560
749 : 1, 7, 107, 749
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 671,786,781,560,749, is 1.
Now, the common factors can be found like this.
671:11x 61
786:2x 3x 131
781:11x 71
560:2x 2x 2x 2x 5x 7
749:7x 107
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 11 = 154
Therefore, the value for common factors is 154.
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 = 172769049831840/(1x154)
LCM = 172769049831840/154
LCM = 1121876946960
Thus, we can understand that the LCM of 671,786,781,560,749 is 1121876946960.
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FAQs on LCM of 671, 786, 781, 560, 749
1. What is the LCM of 671, 786, 781, 560, 749?
Answer: LCM of 671, 786, 781, 560, 749 is 1121876946960.
2. How to calculate the LCM of 671, 786, 781, 560, 749?
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 671, 786, 781, 560, 749.
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}.