LCM of 279, 420, 940, 705
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 279, 420, 940, 705 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 279, 420, 940, 705. So, keep reading to learn more.
Given numbers are 279,420,940,705
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 279,420,940,705 is 1835820.
Find LCM of 279,420,940,705 with Prime Factorization
| 2 | 279, 420, 940, 705 |
| 2 | 279, 210, 470, 705 |
| 3 | 279, 105, 235, 705 |
| 5 | 93, 35, 235, 235 |
| 47 | 93, 7, 47, 47 |
| 93, 7, 1, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 47 x 93 x 7 x 1 x 1 = 1835820
Therefore, the lowest common multiple of 279,420,940,705 is 1835820.
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.
279 x 420 x 940 x 705 = 77655186000
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.
279 : 1, 3, 9, 31, 93, 279
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
940 : 1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940
705 : 1, 3, 5, 15, 47, 141, 235, 705
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 279,420,940,705, is 1.
Now, the common factors can be found like this.
279:3x 3x 31
420:2x 2x 3x 5x 7
940:2x 2x 5x 47
705:3x 5x 47
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 3x 3x 5x 5x 47 = 42300
Therefore, the value for common factors is 42300.
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 = 77655186000/(1x42300)
LCM = 77655186000/42300
LCM = 1835820
Thus, we can understand that the LCM of 279,420,940,705 is 1835820.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 279, 420, 940, 705
1. What is the LCM of 279, 420, 940, 705?
Answer: LCM of 279, 420, 940, 705 is 1835820.
2. How to calculate the LCM of 279, 420, 940, 705?
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 279, 420, 940, 705.
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}.