LCM of 781, 841, 621, 261
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 841, 621, 261 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, 841, 621, 261. So, keep reading to learn more.
Given numbers are 781,841,621,261
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,841,621,261 is 407885841.
Find LCM of 781,841,621,261 with Prime Factorization
| 3 | 781, 841, 621, 261 |
| 3 | 781, 841, 207, 87 |
| 29 | 781, 841, 69, 29 |
| 781, 1, 69, 29 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 29 x 781 x 1 x 69 x 29 = 407885841
Therefore, the lowest common multiple of 781,841,621,261 is 407885841.
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 841 x 621 x 261 = 106458204501
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
841 : 1, 29, 841
621 : 1, 3, 9, 23, 27, 69, 207, 621
261 : 1, 3, 9, 29, 87, 261
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,841,621,261, is 1.
Now, the common factors can be found like this.
781:11x 71
841:29x 29
621:3x 3x 3x 23
261:3x 3x 29
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 29 = 261
Therefore, the value for common factors is 261.
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 = 106458204501/(1x261)
LCM = 106458204501/261
LCM = 407885841
Thus, we can understand that the LCM of 781,841,621,261 is 407885841.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 781, 841, 621, 261
1. What is the LCM of 781, 841, 621, 261?
Answer: LCM of 781, 841, 621, 261 is 407885841.
2. How to calculate the LCM of 781, 841, 621, 261?
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, 841, 621, 261.
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}.