LCM of 420, 442, 694, 169
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 420, 442, 694, 169 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 420, 442, 694, 169. So, keep reading to learn more.
Given numbers are 420,442,694,169
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 420,442,694,169 is 418711020.
Find LCM of 420,442,694,169 with Prime Factorization
| 2 | 420, 442, 694, 169 |
| 13 | 210, 221, 347, 169 |
| 210, 17, 347, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 210 x 17 x 347 x 13 = 418711020
Therefore, the lowest common multiple of 420,442,694,169 is 418711020.
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.
420 x 442 x 694 x 169 = 21772973040
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.
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
442 : 1, 2, 13, 17, 26, 34, 221, 442
694 : 1, 2, 347, 694
169 : 1, 13, 169
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 420,442,694,169, is 1.
Now, the common factors can be found like this.
420:2x 2x 3x 5x 7
442:2x 13x 17
694:2x 347
169:13x 13
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 13 = 52
Therefore, the value for common factors is 52.
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 = 21772973040/(1x52)
LCM = 21772973040/52
LCM = 418711020
Thus, we can understand that the LCM of 420,442,694,169 is 418711020.
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FAQs on LCM of 420, 442, 694, 169
1. What is the LCM of 420, 442, 694, 169?
Answer: LCM of 420, 442, 694, 169 is 418711020.
2. How to calculate the LCM of 420, 442, 694, 169?
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 420, 442, 694, 169.
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}.