GCF of 858 and 990

What is the GCF of 858 and 990?


GCF of 858 and 990

is 66

Formula How to

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What is the Greatest Common Factor of 858 and 990? The greatest common factor (GCF) of a set of numbers is the largest positive integer that divides each of the numbers evenly. It's also called the greatest common divisor (GCD).

The GCF can be found using a variety of methods, including prime factorization and division. The Euclidean algorithm is a commonly used method for finding the GCF of two numbers, and it can be extended to finding the GCF of more than two numbers.

To find GCF (Greatest Common Factor) between two numbers, mainly there are two methods available, Those are-

1. Prime Factorization Method: Find the prime factors of both number and then multiply of all the common prime factors value, you will get the GCF value.

2. Factors Method: Find the factors of both number. In those both factors the highest common factor number is the GCF value.

For calculation, here's how to calculate GCF of 858 and 990 using those formula above, step by step instructions are given below

Prime Factorization Method:

  1. Find the prime factors of the first number 858.
    2, 3, 11, 13
  2. Find the prime factors of the second number 990.
    2, 3, 3, 5, 11
  3. Multiply of all the common prime factors is the GCF value. Which is,
    66

Factors Method:

  1. Find the factors of the first number 858.
    1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858
  2. Find the factors of the second number 990.
    1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
  3. The biggest common factor number is the GCF value. Which is,
    66

GCF (Greatest Common Factor) of 858 and 990 is 66.

GCD (Greatest Common Divisor) of 858 and 990 is 66.

HCF (Highest Common Factor) of 858 and 990 is 66.

Number GCF LCM
858 & 985 1 845130
858 & 986 2 422994
858 & 987 3 282282
858 & 988 26 32604
858 & 989 1 848562
858 & 990 66 12870
858 & 991 1 850278
858 & 992 2 425568
858 & 993 3 283998
858 & 994 2 426426
858 & 995 1 853710