# Calculate the Greatest Common Factor or GCF of 1268

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The instructions to find the GCF of 1268 are the next:

## 1. Decompose all numbers into prime factors

1268 | 2 |

634 | 2 |

317 | 317 |

1 |

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

Prime factors of 1268 | = | 2^{2} . 317 |

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

Common prime factors: 2 , 317

Common prime factors with the lowest exponent: 2^{2}, 317^{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}. 317^{1} = 1268

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