If it's not what You are looking for type in the calculator fields your own values, and You will get the solution.

To find the greatest common factor of two numbers just type them in and get the solution.

To get the Greates Common Factor (GCF) of 39 and 45 we need to factor each value first and then we choose all the copies of factors and multiply them:

39: | 3 | 13 | ||

45: | 3 | 3 | 5 | |

GCF: | 3 |

**The Greates Common Factor (GCF) is: 3**

| Greatest Common Factor (GCF) of 31 and 66 | | Greatest Common Factor (GCF) of 60 and 136 | | Greatest Common Factor (GCF) of 42 and 105 | | Greatest Common Factor (GCF) of 432 and 180 | | Greatest Common Factor (GCF) of 120 and 144 | | Greatest Common Factor (GCF) of 65 and 130 | | Greatest Common Factor (GCF) of 65 and 52 | | Greatest Common Factor (GCF) of 127 and 433 | | Greatest Common Factor (GCF) of 13 and 31 | | Greatest Common Factor (GCF) of 20 and 22 | | Greatest Common Factor (GCF) of 44 and 14 | | Greatest Common Factor (GCF) of 60 and 66 | | Greatest Common Factor (GCF) of 90 and 30 | | Greatest Common Factor (GCF) of 80 and 16 | | Greatest Common Factor (GCF) of 88 and 55 | | Greatest Common Factor (GCF) of 48 and 12 | | Greatest Common Factor (GCF) of 36 and 16 | | Greatest Common Factor (GCF) of 88 and 66 | | Greatest Common Factor (GCF) of 54 and 12 | | Greatest Common Factor (GCF) of 77 and 66 | | Greatest Common Factor (GCF) of 42 and 63 | | Greatest Common Factor (GCF) of 56 and 63 | | Greatest Common Factor (GCF) of 21 and 93 | | Greatest Common Factor (GCF) of 147 and 63 | | Greatest Common Factor (GCF) of 99 and 55 | | Greatest Common Factor (GCF) of 35 and 57 | | Greatest Common Factor (GCF) of 4 and 26 | | Greatest Common Factor (GCF) of 216 and 294 | | Greatest Common Factor (GCF) of 3150 and 115 | | Greatest Common Factor (GCF) of 12748 and 2040 | | Greatest Common Factor (GCF) of 5892 and 862 | | Greatest Common Factor (GCF) of 3399 and 9933 | | Greatest Common Factor (GCF) of 1132 and 976 | | Greatest Common Factor (GCF) of 404 and 1004 | | Greatest Common Factor (GCF) of 656 and 888 | | Greatest Common Factor (GCF) of 90 and 126 | | Greatest Common Factor (GCF) of 3160 and 316 | | Greatest Common Factor (GCF) of 25 and 25 | | Greatest Common Factor (GCF) of 25 and 21 | | Greatest Common Factor (GCF) of 144 and 48 | | Greatest Common Factor (GCF) of 144 and 38 | | Greatest Common Factor (GCF) of 81 and 54 | | Greatest Common Factor (GCF) of 121 and 22 | | Greatest Common Factor (GCF) of 154 and 168 | | Greatest Common Factor (GCF) of 121 and 143 | | Greatest Common Factor (GCF) of 49 and 91 | | Greatest Common Factor (GCF) of 156 and 169 | | Greatest Common Factor (GCF) of 98 and 182 | | Greatest Common Factor (GCF) of 343 and 27 | | Greatest Common Factor (GCF) of 48 and 54 | | Greatest Common Factor (GCF) of 32 and 45 | | Greatest Common Factor (GCF) of 175 and 323 | | Greatest Common Factor (GCF) of 6647 and 14467 | | Greatest Common Factor (GCF) of 91 and 77 | | Greatest Common Factor (GCF) of 30 and 847 | | Greatest Common Factor (GCF) of 39 and 26 | | Greatest Common Factor (GCF) of 96 and 72 | | Greatest Common Factor (GCF) of 70 and 98 | | Greatest Common Factor (GCF) of 36 and 90 | | Greatest Common Factor (GCF) of 6 and 91 | | Greatest Common Factor (GCF) of 32 and 7 | | Greatest Common Factor (GCF) of 10 and 44 | | Greatest Common Factor (GCF) of 8 and 137 | | Greatest Common Factor (GCF) of 96 and 8 | | Greatest Common Factor (GCF) of 6 and 102 |

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