LCM of 805, 670, 756, 685
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 805, 670, 756, 685 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 805, 670, 756, 685. So, keep reading to learn more.
Given numbers are 805,670,756,685
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 805,670,756,685 is 798022260.
Find LCM of 805,670,756,685 with Prime Factorization
| 2 | 805, 670, 756, 685 |
| 5 | 805, 335, 378, 685 |
| 7 | 161, 67, 378, 137 |
| 23, 67, 54, 137 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 7 x 23 x 67 x 54 x 137 = 798022260
Therefore, the lowest common multiple of 805,670,756,685 is 798022260.
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.
805 x 670 x 756 x 685 = 279307791000
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.
805 : 1, 5, 7, 23, 35, 115, 161, 805
670 : 1, 2, 5, 10, 67, 134, 335, 670
756 : 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756
685 : 1, 5, 137, 685
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 805,670,756,685, is 1.
Now, the common factors can be found like this.
805:5x 7x 23
670:2x 5x 67
756:2x 2x 3x 3x 3x 7
685:5x 137
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5x 5x 7 = 350
Therefore, the value for common factors is 350.
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 = 279307791000/(1x350)
LCM = 279307791000/350
LCM = 798022260
Thus, we can understand that the LCM of 805,670,756,685 is 798022260.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 805, 670, 756, 685
1. What is the LCM of 805, 670, 756, 685?
Answer: LCM of 805, 670, 756, 685 is 798022260.
2. How to calculate the LCM of 805, 670, 756, 685?
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 805, 670, 756, 685.
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}.