LCM of 847, 420, 663, 170
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 847, 420, 663, 170 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 847, 420, 663, 170. So, keep reading to learn more.
Given numbers are 847,420,663,170
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 847,420,663,170 is 11231220.
Find LCM of 847,420,663,170 with Prime Factorization
| 2 | 847, 420, 663, 170 |
| 3 | 847, 210, 663, 85 |
| 5 | 847, 70, 221, 85 |
| 7 | 847, 14, 221, 17 |
| 17 | 121, 2, 221, 17 |
| 121, 2, 13, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 7 x 17 x 121 x 2 x 13 x 1 = 11231220
Therefore, the lowest common multiple of 847,420,663,170 is 11231220.
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.
847 x 420 x 663 x 170 = 40095455400
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.
847 : 1, 7, 11, 77, 121, 847
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
663 : 1, 3, 13, 17, 39, 51, 221, 663
170 : 1, 2, 5, 10, 17, 34, 85, 170
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 847,420,663,170, is 1.
Now, the common factors can be found like this.
847:7x 11x 11
420:2x 2x 3x 5x 7
663:3x 13x 17
170:2x 5x 17
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 5x 7x 17 = 3570
Therefore, the value for common factors is 3570.
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 = 40095455400/(1x3570)
LCM = 40095455400/3570
LCM = 11231220
Thus, we can understand that the LCM of 847,420,663,170 is 11231220.
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FAQs on LCM of 847, 420, 663, 170
1. What is the LCM of 847, 420, 663, 170?
Answer: LCM of 847, 420, 663, 170 is 11231220.
2. How to calculate the LCM of 847, 420, 663, 170?
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 847, 420, 663, 170.
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}.