Given numbers are 421,196,421,989

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

The LCM of 421,196,421,989 is 81608324.

Find LCM of 421,196,421,989 with Prime Factorization

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

421 x 1 x 196 x 1 x 989 = 81608324

Therefore, the lowest common multiple of 421,196,421,989 is 81608324.

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.

421 x 196 x 421 x 989 = 34357104404

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.

421 : 1, 421

196 : 1, 2, 4, 7, 14, 28, 49, 98, 196

421 : 1, 421

989 : 1, 23, 43, 989

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 421,196,421,989, is 1.

Now, the common factors can be found like this.

421:421

196:2x 2x 7x 7

421:421

989:23x 43

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

421 = 421

Therefore, the value for common factors is 421.

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 = 34357104404/(1x421)

LCM = 34357104404/421

LCM = 81608324

Thus, we can understand that the LCM of 421,196,421,989 is 81608324.

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

• LCM of 846, 570, 972, 132
• LCM of 428, 699, 172, 980
• LCM of 539, 511, 816, 315
• LCM of 424, 865, 688, 947
• LCM of 358, 477, 227, 703

1. What is the LCM of 421, 196, 421, 989?

Answer: LCM of 421, 196, 421, 989 is 81608324.

2. How to calculate the LCM of 421, 196, 421, 989?

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 421, 196, 421, 989.

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}.