Given numbers are 853,137,420,642

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 853,137,420,642 is 5251733340.

Find LCM of 853,137,420,642 with Prime Factorization

Multiply the prime numbers at the bottom and the left side.

2 x 3 x 853 x 137 x 70 x 107 = 5251733340

Therefore, the lowest common multiple of 853,137,420,642 is 5251733340.

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.

853 x 137 x 420 x 642 = 31510400040

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.

853 : 1, 853

137 : 1, 137

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

642 : 1, 2, 3, 6, 107, 214, 321, 642

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 853,137,420,642, is 1.

Now, the common factors can be found like this.

853:853

137:137

420:2x 2x 3x 5x 7

642:2x 3x 107

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2x 3 = 6

Therefore, the value for common factors is 6.

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 = 31510400040/(1x6)

LCM = 31510400040/6

LCM = 5251733340

Thus, we can understand that the LCM of 853,137,420,642 is 5251733340.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 711, 300, 388, 456
• LCM of 244, 325, 133, 693
• LCM of 889, 422, 243, 631
• LCM of 895, 634, 913, 502
• LCM of 658, 304, 870, 107

1. What is the LCM of 853, 137, 420, 642?

Answer: LCM of 853, 137, 420, 642 is 5251733340.

2. How to calculate the LCM of 853, 137, 420, 642?

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 853, 137, 420, 642.

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}.