# Calculate the Greatest Common Factor or GCF of 7, 13 and 41

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The instructions to find the GCF of 7, 13 and 41 are the next:

## 1. Decompose all numbers into prime factors

7 | 7 |

1 |

13 | 13 |

1 |

41 | 41 |

1 |

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

Prime factors of 7 | = | 7 |

Prime factors of 13 | = | 13 |

Prime factors of 41 | = | 41 |

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

Common prime factors: None

Common prime factors with the lowest exponent: None

## 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.

Since there are not common prime factors the **GCF** is 1

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