LCM of 561, 685, 781, 885
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 561, 685, 781, 885 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 561, 685, 781, 885. So, keep reading to learn more.
Given numbers are 561,685,781,885
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 561,685,781,885 is 1609769865.
Find LCM of 561,685,781,885 with Prime Factorization
| 3 | 561, 685, 781, 885 |
| 5 | 187, 685, 781, 295 |
| 11 | 187, 137, 781, 59 |
| 17, 137, 71, 59 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 11 x 17 x 137 x 71 x 59 = 1609769865
Therefore, the lowest common multiple of 561,685,781,885 is 1609769865.
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.
561 x 685 x 781 x 885 = 265612027725
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.
561 : 1, 3, 11, 17, 33, 51, 187, 561
685 : 1, 5, 137, 685
781 : 1, 11, 71, 781
885 : 1, 3, 5, 15, 59, 177, 295, 885
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 561,685,781,885, is 1.
Now, the common factors can be found like this.
561:3x 11x 17
685:5x 137
781:11x 71
885:3x 5x 59
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 11 = 165
Therefore, the value for common factors is 165.
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 = 265612027725/(1x165)
LCM = 265612027725/165
LCM = 1609769865
Thus, we can understand that the LCM of 561,685,781,885 is 1609769865.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 561, 685, 781, 885
1. What is the LCM of 561, 685, 781, 885?
Answer: LCM of 561, 685, 781, 885 is 1609769865.
2. How to calculate the LCM of 561, 685, 781, 885?
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 561, 685, 781, 885.
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}.