Find the LCM of 803, 210, 686, 638 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 803, 210, 686, 638. So, keep reading to learn more.
Given numbers are 803,210,686,638
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 803,210,686,638 is 239623230.
Find LCM of 803,210,686,638 with Prime Factorization
2 | 803, 210, 686, 638 |
7 | 803, 105, 343, 319 |
11 | 803, 15, 49, 319 |
73, 15, 49, 29 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 11 x 73 x 15 x 49 x 29 = 239623230
Therefore, the lowest common multiple of 803,210,686,638 is 239623230.
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.
803 x 210 x 686 x 638 = 73803954840
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.
803 : 1, 11, 73, 803
210 : 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
686 : 1, 2, 7, 14, 49, 98, 343, 686
638 : 1, 2, 11, 22, 29, 58, 319, 638
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 803,210,686,638, is 1.
Now, the common factors can be found like this.
803:11x 73
210:2x 3x 5x 7
686:2x 7x 7x 7
638:2x 11x 29
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 7x 11 = 308
Therefore, the value for common factors is 308.
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 = 73803954840/(1x308)
LCM = 73803954840/308
LCM = 239623230
Thus, we can understand that the LCM of 803,210,686,638 is 239623230.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 803, 210, 686, 638?
Answer: LCM of 803, 210, 686, 638 is 239623230.
2. How to calculate the LCM of 803, 210, 686, 638?
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 803, 210, 686, 638.
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}.