LCM of 665, 321, 856, 693
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 665, 321, 856, 693 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 665, 321, 856, 693. So, keep reading to learn more.
Given numbers are 665,321,856,693
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 665,321,856,693 is 56354760.
Find LCM of 665,321,856,693 with Prime Factorization
| 3 | 665, 321, 856, 693 |
| 7 | 665, 107, 856, 231 |
| 107 | 95, 107, 856, 33 |
| 95, 1, 8, 33 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 107 x 95 x 1 x 8 x 33 = 56354760
Therefore, the lowest common multiple of 665,321,856,693 is 56354760.
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.
665 x 321 x 856 x 693 = 126629145720
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.
665 : 1, 5, 7, 19, 35, 95, 133, 665
321 : 1, 3, 107, 321
856 : 1, 2, 4, 8, 107, 214, 428, 856
693 : 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 665,321,856,693, is 1.
Now, the common factors can be found like this.
665:5x 7x 19
321:3x 107
856:2x 2x 2x 107
693:3x 3x 7x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 7x 107 = 2247
Therefore, the value for common factors is 2247.
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 = 126629145720/(1x2247)
LCM = 126629145720/2247
LCM = 56354760
Thus, we can understand that the LCM of 665,321,856,693 is 56354760.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 665, 321, 856, 693
1. What is the LCM of 665, 321, 856, 693?
Answer: LCM of 665, 321, 856, 693 is 56354760.
2. How to calculate the LCM of 665, 321, 856, 693?
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 665, 321, 856, 693.
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}.