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| 78: | 2 | 3 | 13 | |
| 117: | 3 | 3 | 13 | |
| GCF: | 3 | 13 |
The Greates Common Factor (GCF) is: 3 x 13 = 39
| Greatest Common Factor (GCF) of 64 and 20 | | Greatest Common Factor (GCF) of 26 and 18 | | Greatest Common Factor (GCF) of 99 and 45 | | Greatest Common Factor (GCF) of 35 and 81 | | Greatest Common Factor (GCF) of 99 and 72 | | Greatest Common Factor (GCF) of 17 and 20 | | Greatest Common Factor (GCF) of 34 and 42 | | Greatest Common Factor (GCF) of 72 and 2208 | | Greatest Common Factor (GCF) of 476 and 1785 | | Greatest Common Factor (GCF) of 93 and 23 | | Greatest Common Factor (GCF) of 224 and 430 | | Greatest Common Factor (GCF) of 9 and 39 | | Greatest Common Factor (GCF) of 88 and 99 | | Greatest Common Factor (GCF) of 15 and 99 | | Greatest Common Factor (GCF) of 78 and 15 | | Greatest Common Factor (GCF) of 72 and 70 | | Greatest Common Factor (GCF) of 441 and 2744 | | Greatest Common Factor (GCF) of 108 and 124 | | Greatest Common Factor (GCF) of 72 and 124 | | Greatest Common Factor (GCF) of 63 and 162 | | Greatest Common Factor (GCF) of 112 and 72 | | Greatest Common Factor (GCF) of 150 and 225 | | Greatest Common Factor (GCF) of 72 and 85 | | Greatest Common Factor (GCF) of 138 and 81 | | Greatest Common Factor (GCF) of 99 and 11 | | Greatest Common Factor (GCF) of 27 and 3 | | Greatest Common Factor (GCF) of 42 and 34 | | Greatest Common Factor (GCF) of 63 and 44 | | Greatest Common Factor (GCF) of 76 and 38 | | Greatest Common Factor (GCF) of 13 and 60 | | Greatest Common Factor (GCF) of 95 and 91 | | Greatest Common Factor (GCF) of 89 and 29 |