LCM of 665, 596, 749, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 665, 596, 749, 420 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, 596, 749, 420. So, keep reading to learn more.
Given numbers are 665,596,749,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 665,596,749,420 is 127225140.
Find LCM of 665,596,749,420 with Prime Factorization
| 2 | 665, 596, 749, 420 |
| 2 | 665, 298, 749, 210 |
| 5 | 665, 149, 749, 105 |
| 7 | 133, 149, 749, 21 |
| 19, 149, 107, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 7 x 19 x 149 x 107 x 3 = 127225140
Therefore, the lowest common multiple of 665,596,749,420 is 127225140.
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 596 x 749 x 420 = 124680637200
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
596 : 1, 2, 4, 149, 298, 596
749 : 1, 7, 107, 749
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
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 665,596,749,420, is 1.
Now, the common factors can be found like this.
665:5x 7x 19
596:2x 2x 149
749:7x 107
420:2x 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 2x 5x 7x 7 = 980
Therefore, the value for common factors is 980.
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 = 124680637200/(1x980)
LCM = 124680637200/980
LCM = 127225140
Thus, we can understand that the LCM of 665,596,749,420 is 127225140.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 665, 596, 749, 420
1. What is the LCM of 665, 596, 749, 420?
Answer: LCM of 665, 596, 749, 420 is 127225140.
2. How to calculate the LCM of 665, 596, 749, 420?
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, 596, 749, 420.
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}.