LCM of 171, 689, 318, 821
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 171, 689, 318, 821 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 171, 689, 318, 821. So, keep reading to learn more.
Given numbers are 171,689,318,821
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 171,689,318,821 is 193458798.
Find LCM of 171,689,318,821 with Prime Factorization
| 3 | 171, 689, 318, 821 |
| 53 | 57, 689, 106, 821 |
| 57, 13, 2, 821 |
Multiply the prime numbers at the bottom and the left side.
3 x 53 x 57 x 13 x 2 x 821 = 193458798
Therefore, the lowest common multiple of 171,689,318,821 is 193458798.
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.
171 x 689 x 318 x 821 = 30759948882
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.
171 : 1, 3, 9, 19, 57, 171
689 : 1, 13, 53, 689
318 : 1, 2, 3, 6, 53, 106, 159, 318
821 : 1, 821
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 171,689,318,821, is 1.
Now, the common factors can be found like this.
171:3x 3x 19
689:13x 53
318:2x 3x 53
821:821
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 53 = 159
Therefore, the value for common factors is 159.
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 = 30759948882/(1x159)
LCM = 30759948882/159
LCM = 193458798
Thus, we can understand that the LCM of 171,689,318,821 is 193458798.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 171, 689, 318, 821
1. What is the LCM of 171, 689, 318, 821?
Answer: LCM of 171, 689, 318, 821 is 193458798.
2. How to calculate the LCM of 171, 689, 318, 821?
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 171, 689, 318, 821.
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}.