LCM of 420, 313, 689, 128, 156
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 420, 313, 689, 128, 156 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, 313, 689, 128, 156. So, keep reading to learn more.
Given numbers are 420,313,689,128,156
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 420,313,689,128,156 is 2898430080.
Find LCM of 420,313,689,128,156 with Prime Factorization
| 2 | 420, 313, 689, 128, 156 |
| 2 | 210, 313, 689, 64, 78 |
| 3 | 105, 313, 689, 32, 39 |
| 13 | 35, 313, 689, 32, 13 |
| 35, 313, 53, 32, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 13 x 35 x 313 x 53 x 32 x 1 = 2898430080
Therefore, the lowest common multiple of 420,313,689,128,156 is 2898430080.
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 313 x 689 x 128 x 156 = 1808620369920
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
313 : 1, 313
689 : 1, 13, 53, 689
128 : 1, 2, 4, 8, 16, 32, 64, 128
156 : 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 420,313,689,128,156, is 1.
Now, the common factors can be found like this.
420:2x 2x 3x 5x 7
313:313
689:13x 53
128:2x 2x 2x 2x 2x 2x 2
156:2x 2x 3x 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 2x 2x 3x 13 = 624
Therefore, the value for common factors is 624.
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 = 1808620369920/(1x624)
LCM = 1808620369920/624
LCM = 2898430080
Thus, we can understand that the LCM of 420,313,689,128,156 is 2898430080.
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FAQs on LCM of 420, 313, 689, 128, 156
1. What is the LCM of 420, 313, 689, 128, 156?
Answer: LCM of 420, 313, 689, 128, 156 is 2898430080.
2. How to calculate the LCM of 420, 313, 689, 128, 156?
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, 313, 689, 128, 156.
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}.