LCM of 781, 789, 286, 688, 520
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 789, 286, 688, 520 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, 789, 286, 688, 520. So, keep reading to learn more.
Given numbers are 781,789,286,688,520
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,789,286,688,520 is 27556866480.
Find LCM of 781,789,286,688,520 with Prime Factorization
| 2 | 781, 789, 286, 688, 520 |
| 2 | 781, 789, 143, 344, 260 |
| 2 | 781, 789, 143, 172, 130 |
| 11 | 781, 789, 143, 86, 65 |
| 13 | 71, 789, 13, 86, 65 |
| 71, 789, 1, 86, 5 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 11 x 13 x 71 x 789 x 1 x 86 x 5 = 27556866480
Therefore, the lowest common multiple of 781,789,286,688,520 is 27556866480.
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 789 x 286 x 688 x 520 = 63050110506240
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
789 : 1, 3, 263, 789
286 : 1, 2, 11, 13, 22, 26, 143, 286
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
520 : 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,789,286,688,520, is 1.
Now, the common factors can be found like this.
781:11x 71
789:3x 263
286:2x 11x 13
688:2x 2x 2x 2x 43
520:2x 2x 2x 5x 13
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 2x 2x 11x 13 = 2288
Therefore, the value for common factors is 2288.
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 = 63050110506240/(1x2288)
LCM = 63050110506240/2288
LCM = 27556866480
Thus, we can understand that the LCM of 781,789,286,688,520 is 27556866480.
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FAQs on LCM of 781, 789, 286, 688, 520
1. What is the LCM of 781, 789, 286, 688, 520?
Answer: LCM of 781, 789, 286, 688, 520 is 27556866480.
2. How to calculate the LCM of 781, 789, 286, 688, 520?
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, 789, 286, 688, 520.
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}.