LCM of 291, 781, 638, 145
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 291, 781, 638, 145 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 291, 781, 638, 145. So, keep reading to learn more.
Given numbers are 291,781,638,145
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 291,781,638,145 is 65908590.
Find LCM of 291,781,638,145 with Prime Factorization
| 11 | 291, 781, 638, 145 |
| 29 | 291, 71, 58, 145 |
| 291, 71, 2, 5 |
Multiply the prime numbers at the bottom and the left side.
11 x 29 x 291 x 71 x 2 x 5 = 65908590
Therefore, the lowest common multiple of 291,781,638,145 is 65908590.
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.
291 x 781 x 638 x 145 = 21024840210
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.
291 : 1, 3, 97, 291
781 : 1, 11, 71, 781
638 : 1, 2, 11, 22, 29, 58, 319, 638
145 : 1, 5, 29, 145
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 291,781,638,145, is 1.
Now, the common factors can be found like this.
291:3x 97
781:11x 71
638:2x 11x 29
145:5x 29
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
11x 29 = 319
Therefore, the value for common factors is 319.
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 = 21024840210/(1x319)
LCM = 21024840210/319
LCM = 65908590
Thus, we can understand that the LCM of 291,781,638,145 is 65908590.
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FAQs on LCM of 291, 781, 638, 145
1. What is the LCM of 291, 781, 638, 145?
Answer: LCM of 291, 781, 638, 145 is 65908590.
2. How to calculate the LCM of 291, 781, 638, 145?
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 291, 781, 638, 145.
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}.