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Greatest Common Factor

Calculate the Greatest Common Factor or GCF of 32, 64, 96 and 104

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The instructions to find the GCF of 32, 64, 96 and 104 are the next:

1. Decompose all numbers into prime factors

322
162
82
42
22
1
642
322
162
82
42
22
1
962
482
242
122
62
33
1
1042
522
262
1313
1

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

Prime factors of 32=25
Prime factors of 64=26
Prime factors of 96=25 . 3
Prime factors of 104=23 . 13

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2

Common prime factors with the lowest exponent: 23

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 = 23 = 8

Also calculates the:

Least Common Multiple or LCM of 32, 64, 96 and 104

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