LCM of 685, 785, 972, 180
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 685, 785, 972, 180 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 685, 785, 972, 180. So, keep reading to learn more.
Given numbers are 685,785,972,180
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 685,785,972,180 is 104533740.
Find LCM of 685,785,972,180 with Prime Factorization
| 2 | 685, 785, 972, 180 |
| 2 | 685, 785, 486, 90 |
| 3 | 685, 785, 243, 45 |
| 3 | 685, 785, 81, 15 |
| 5 | 685, 785, 27, 5 |
| 137, 157, 27, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 137 x 157 x 27 x 1 = 104533740
Therefore, the lowest common multiple of 685,785,972,180 is 104533740.
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.
685 x 785 x 972 x 180 = 94080366000
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.
685 : 1, 5, 137, 685
785 : 1, 5, 157, 785
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
180 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 685,785,972,180, is 1.
Now, the common factors can be found like this.
685:5x 137
785:5x 157
972:2x 2x 3x 3x 3x 3x 3
180:2x 2x 3x 3x 5
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 3x 5x 5 = 900
Therefore, the value for common factors is 900.
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 = 94080366000/(1x900)
LCM = 94080366000/900
LCM = 104533740
Thus, we can understand that the LCM of 685,785,972,180 is 104533740.
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FAQs on LCM of 685, 785, 972, 180
1. What is the LCM of 685, 785, 972, 180?
Answer: LCM of 685, 785, 972, 180 is 104533740.
2. How to calculate the LCM of 685, 785, 972, 180?
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 685, 785, 972, 180.
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}.