LCM of 709, 120, 781, 415, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 709, 120, 781, 415, 420 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 709, 120, 781, 415, 420. So, keep reading to learn more.
Given numbers are 709,120,781,415,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 709,120,781,415,420 is 38605985880.
Find LCM of 709,120,781,415,420 with Prime Factorization
| 2 | 709, 120, 781, 415, 420 |
| 2 | 709, 60, 781, 415, 210 |
| 3 | 709, 30, 781, 415, 105 |
| 5 | 709, 10, 781, 415, 35 |
| 709, 2, 781, 83, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 709 x 2 x 781 x 83 x 7 = 38605985880
Therefore, the lowest common multiple of 709,120,781,415,420 is 38605985880.
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.
709 x 120 x 781 x 415 x 420 = 11581795764000
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.
709 : 1, 709
120 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
781 : 1, 11, 71, 781
415 : 1, 5, 83, 415
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 709,120,781,415,420, is 1.
Now, the common factors can be found like this.
709:709
120:2x 2x 2x 3x 5
781:11x 71
415:5x 83
420:2x 2x 3x 5x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 3x 5x 5 = 300
Therefore, the value for common factors is 300.
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 = 11581795764000/(1x300)
LCM = 11581795764000/300
LCM = 38605985880
Thus, we can understand that the LCM of 709,120,781,415,420 is 38605985880.
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FAQs on LCM of 709, 120, 781, 415, 420
1. What is the LCM of 709, 120, 781, 415, 420?
Answer: LCM of 709, 120, 781, 415, 420 is 38605985880.
2. How to calculate the LCM of 709, 120, 781, 415, 420?
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 709, 120, 781, 415, 420.
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}.