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| 420: | 2 | 2 | 3 | 5 | 7 | ||
| 540: | 2 | 2 | 3 | 3 | 3 | 5 | |
| GCF: | 2 | 2 | 3 | 5 |
The Greates Common Factor (GCF) is: 2 x 2 x 3 x 5 = 60
| Greatest Common Factor (GCF) of 61 and 9 | | Greatest Common Factor (GCF) of 120 and 750 | | Greatest Common Factor (GCF) of 35 and 85 | | Greatest Common Factor (GCF) of 64 and 225 | | Greatest Common Factor (GCF) of 65 and 90 | | Greatest Common Factor (GCF) of 121 and 98 | | Greatest Common Factor (GCF) of 14 and 85 | | Greatest Common Factor (GCF) of 21 and 55 | | Greatest Common Factor (GCF) of 91 and 96 | | Greatest Common Factor (GCF) of 99 and 71 | | Greatest Common Factor (GCF) of 18 and 17 | | Greatest Common Factor (GCF) of 51 and 144 | | Greatest Common Factor (GCF) of 143 and 35 | | Greatest Common Factor (GCF) of 3 and 94 | | Greatest Common Factor (GCF) of 40 and 84 | | Greatest Common Factor (GCF) of 88 and 44 | | Greatest Common Factor (GCF) of 36 and 31 | | Greatest Common Factor (GCF) of 4 and 64 | | Greatest Common Factor (GCF) of 8 and 100 | | Greatest Common Factor (GCF) of 11 and 92 | | Greatest Common Factor (GCF) of 12 and 55 | | Greatest Common Factor (GCF) of 71 and 83 | | Greatest Common Factor (GCF) of 62 and 14 | | Greatest Common Factor (GCF) of 59 and 4 | | Greatest Common Factor (GCF) of 32 and 4 | | Greatest Common Factor (GCF) of 18 and 34 | | Greatest Common Factor (GCF) of 23 and 57 | | Greatest Common Factor (GCF) of 6 and 97 | | Greatest Common Factor (GCF) of 27000 and 400 | | Greatest Common Factor (GCF) of 140 and 19600 | | Greatest Common Factor (GCF) of 512000 and 900 | | Greatest Common Factor (GCF) of 324 and 2916 |