LCM of 991, 770, 253, 974, 520
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 991, 770, 253, 974, 520 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 991, 770, 253, 974, 520. So, keep reading to learn more.
Given numbers are 991,770,253,974,520
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 991,770,253,974,520 is 444451647640.
Find LCM of 991,770,253,974,520 with Prime Factorization
| 2 | 991, 770, 253, 974, 520 |
| 5 | 991, 385, 253, 487, 260 |
| 11 | 991, 77, 253, 487, 52 |
| 991, 7, 23, 487, 52 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 11 x 991 x 7 x 23 x 487 x 52 = 444451647640
Therefore, the lowest common multiple of 991,770,253,974,520 is 444451647640.
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.
991 x 770 x 253 x 974 x 520 = 97779362480800
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.
991 : 1, 991
770 : 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
253 : 1, 11, 23, 253
974 : 1, 2, 487, 974
520 : 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 991,770,253,974,520, is 1.
Now, the common factors can be found like this.
991:991
770:2x 5x 7x 11
253:11x 23
974:2x 487
520:2x 2x 2x 5x 13
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 11 = 220
Therefore, the value for common factors is 220.
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 = 97779362480800/(1x220)
LCM = 97779362480800/220
LCM = 444451647640
Thus, we can understand that the LCM of 991,770,253,974,520 is 444451647640.
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FAQs on LCM of 991, 770, 253, 974, 520
1. What is the LCM of 991, 770, 253, 974, 520?
Answer: LCM of 991, 770, 253, 974, 520 is 444451647640.
2. How to calculate the LCM of 991, 770, 253, 974, 520?
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 991, 770, 253, 974, 520.
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}.