LCM of 253, 693, 686, 840
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 253, 693, 686, 840 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 253, 693, 686, 840. So, keep reading to learn more.
Given numbers are 253,693,686,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 253,693,686,840 is 31240440.
Find LCM of 253,693,686,840 with Prime Factorization
| 2 | 253, 693, 686, 840 |
| 3 | 253, 693, 343, 420 |
| 7 | 253, 231, 343, 140 |
| 11 | 253, 33, 49, 20 |
| 23, 3, 49, 20 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 7 x 11 x 23 x 3 x 49 x 20 = 31240440
Therefore, the lowest common multiple of 253,693,686,840 is 31240440.
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.
253 x 693 x 686 x 840 = 101031582960
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.
253 : 1, 11, 23, 253
693 : 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693
686 : 1, 2, 7, 14, 49, 98, 343, 686
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 253,693,686,840, is 1.
Now, the common factors can be found like this.
253:11x 23
693:3x 3x 7x 11
686:2x 7x 7x 7
840:2x 2x 2x 3x 5x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 7x 7x 11 = 3234
Therefore, the value for common factors is 3234.
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 = 101031582960/(1x3234)
LCM = 101031582960/3234
LCM = 31240440
Thus, we can understand that the LCM of 253,693,686,840 is 31240440.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 253, 693, 686, 840
1. What is the LCM of 253, 693, 686, 840?
Answer: LCM of 253, 693, 686, 840 is 31240440.
2. How to calculate the LCM of 253, 693, 686, 840?
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 253, 693, 686, 840.
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}.