LCM of 280, 686, 294, 985
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 280, 686, 294, 985 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 280, 686, 294, 985. So, keep reading to learn more.
Given numbers are 280,686,294,985
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 280,686,294,985 is 8108520.
Find LCM of 280,686,294,985 with Prime Factorization
| 2 | 280, 686, 294, 985 |
| 5 | 140, 343, 147, 985 |
| 7 | 28, 343, 147, 197 |
| 7 | 4, 49, 21, 197 |
| 4, 7, 3, 197 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 7 x 7 x 4 x 7 x 3 x 197 = 8108520
Therefore, the lowest common multiple of 280,686,294,985 is 8108520.
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.
280 x 686 x 294 x 985 = 55624447200
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.
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
686 : 1, 2, 7, 14, 49, 98, 343, 686
294 : 1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294
985 : 1, 5, 197, 985
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 280,686,294,985, is 1.
Now, the common factors can be found like this.
280:2x 2x 2x 5x 7
686:2x 7x 7x 7
294:2x 3x 7x 7
985:5x 197
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 5x 7x 7x 7 = 6860
Therefore, the value for common factors is 6860.
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 = 55624447200/(1x6860)
LCM = 55624447200/6860
LCM = 8108520
Thus, we can understand that the LCM of 280,686,294,985 is 8108520.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 280, 686, 294, 985
1. What is the LCM of 280, 686, 294, 985?
Answer: LCM of 280, 686, 294, 985 is 8108520.
2. How to calculate the LCM of 280, 686, 294, 985?
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 280, 686, 294, 985.
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}.