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Greatest Common Factor

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Greatest Common Factor

Calculate the Greatest Common Factor or GCF of 88, 112, 118 and 124

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The instructions to find the GCF of 88, 112, 118 and 124 are the next:

1. Decompose all numbers into prime factors

88	2
44	2
22	2
11	11
1

112	2
56	2
28	2
14	2
7	7
1

118	2
59	59
1

124	2
62	2
31	31
1

2. Write all numbers as the product of its prime factors

Prime factors of 88	=	2³ . 11
Prime factors of 112	=	2⁴ . 7
Prime factors of 118	=	2 . 59
Prime factors of 124	=	2² . 31

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2

Common prime factors with the lowest exponent: 2¹

4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 2¹ = 2

Also calculates the:

Least Common Multiple or LCM of 88, 112, 118 and 124

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