Find the LCM of 781, 380, 690, 617 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 781, 380, 690, 617. So, keep reading to learn more.
Given numbers are 781,380,690,617
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,380,690,617 is 12634814940.
Find LCM of 781,380,690,617 with Prime Factorization
2 | 781, 380, 690, 617 |
5 | 781, 190, 345, 617 |
781, 38, 69, 617 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 781 x 38 x 69 x 617 = 12634814940
Therefore, the lowest common multiple of 781,380,690,617 is 12634814940.
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.
781 x 380 x 690 x 617 = 126348149400
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.
781 : 1, 11, 71, 781
380 : 1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
617 : 1, 617
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,380,690,617, is 1.
Now, the common factors can be found like this.
781:11x 71
380:2x 2x 5x 19
690:2x 3x 5x 23
617:617
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5 = 10
Therefore, the value for common factors is 10.
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 = 126348149400/(1x10)
LCM = 126348149400/10
LCM = 12634814940
Thus, we can understand that the LCM of 781,380,690,617 is 12634814940.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 781, 380, 690, 617?
Answer: LCM of 781, 380, 690, 617 is 12634814940.
2. How to calculate the LCM of 781, 380, 690, 617?
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 781, 380, 690, 617.
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}.