LCM of 781, 710, 665, 709
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 710, 665, 709 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, 710, 665, 709. So, keep reading to learn more.
Given numbers are 781,710,665,709
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,710,665,709 is 736459570.
Find LCM of 781,710,665,709 with Prime Factorization
| 5 | 781, 710, 665, 709 |
| 71 | 781, 142, 133, 709 |
| 11, 2, 133, 709 |
Multiply the prime numbers at the bottom and the left side.
5 x 71 x 11 x 2 x 133 x 709 = 736459570
Therefore, the lowest common multiple of 781,710,665,709 is 736459570.
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 710 x 665 x 709 = 261443147350
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
710 : 1, 2, 5, 10, 71, 142, 355, 710
665 : 1, 5, 7, 19, 35, 95, 133, 665
709 : 1, 709
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,710,665,709, is 1.
Now, the common factors can be found like this.
781:11x 71
710:2x 5x 71
665:5x 7x 19
709:709
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
5x 71 = 355
Therefore, the value for common factors is 355.
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 = 261443147350/(1x355)
LCM = 261443147350/355
LCM = 736459570
Thus, we can understand that the LCM of 781,710,665,709 is 736459570.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 781, 710, 665, 709
1. What is the LCM of 781, 710, 665, 709?
Answer: LCM of 781, 710, 665, 709 is 736459570.
2. How to calculate the LCM of 781, 710, 665, 709?
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, 710, 665, 709.
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}.