LCM of 821, 754, 624, 756
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 821, 754, 624, 756 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 821, 754, 624, 756. So, keep reading to learn more.
Given numbers are 821,754,624,756
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 821,754,624,756 is 935979408.
Find LCM of 821,754,624,756 with Prime Factorization
| 2 | 821, 754, 624, 756 |
| 2 | 821, 377, 312, 378 |
| 3 | 821, 377, 156, 189 |
| 13 | 821, 377, 52, 63 |
| 821, 29, 4, 63 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 13 x 821 x 29 x 4 x 63 = 935979408
Therefore, the lowest common multiple of 821,754,624,756 is 935979408.
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.
821 x 754 x 624 x 756 = 292025575296
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.
821 : 1, 821
754 : 1, 2, 13, 26, 29, 58, 377, 754
624 : 1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624
756 : 1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,754,624,756, is 1.
Now, the common factors can be found like this.
821:821
754:2x 13x 29
624:2x 2x 2x 2x 3x 13
756:2x 2x 3x 3x 3x 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 2x 3x 13 = 312
Therefore, the value for common factors is 312.
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 = 292025575296/(1x312)
LCM = 292025575296/312
LCM = 935979408
Thus, we can understand that the LCM of 821,754,624,756 is 935979408.
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FAQs on LCM of 821, 754, 624, 756
1. What is the LCM of 821, 754, 624, 756?
Answer: LCM of 821, 754, 624, 756 is 935979408.
2. How to calculate the LCM of 821, 754, 624, 756?
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 821, 754, 624, 756.
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}.