# Calculate the Greatest Common Factor or GCF of 1108

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The instructions to find the GCF of 1108 are the next:

## 1. Decompose all numbers into prime factors

1108 | 2 |

554 | 2 |

277 | 277 |

1 |

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

Prime factors of 1108 | = | 2^{2} . 277 |

## 3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 277

Common prime factors with the lowest exponent: 2^{2}, 277^{1}

## 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** = 2^{2}. 277^{1} = 1108

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