# Calculate the Greatest Common Factor or GCF of 1344

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The instructions to find the GCF of 1344 are the next:

## 1. Decompose all numbers into prime factors

1344 | 2 |

672 | 2 |

336 | 2 |

168 | 2 |

84 | 2 |

42 | 2 |

21 | 3 |

7 | 7 |

1 |

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

Prime factors of 1344 | = | 2^{6} . 3 . 7 |

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

Common prime factors: 2 , 3 , 7

Common prime factors with the lowest exponent: 2^{6}, 3^{1}, 7^{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^{6}. 3^{1}. 7^{1} = 1344

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