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Greatest Common Factor and Least Common Multiple     Calculator Instructions:

Enter the 2 numbers you want to evaluate and press the appropriate button
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GCF of 25 and 30
GREATEST COMMON FACTOR 60,75
least common multiple of 50 AND 80
lcm 50,70
l.c.m. 80 and 95
g.c.f 50,100
GCF of 15 and 20 and 30
are 3 and 5 twin prime
are 20 and 29 coprime
lcd of 20 and 25
    
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Determine the Greatest Common Factor (GCF) of (123552,2598960)

Determine the factors for 123552 up to 123552 since that is the minimum of the 2 numbers
1,2,3,4,6,8,9,11,12,13,16,18,22,24,26,27,32,33,36,39,44,48,52,54,66,72,78,88,96,99,104,108,117,132,143,144,156,176,198,208,216,234,264,286,288,297,312,351,352,396,416,429,432,468,528,572,594,624,702,792,858,864,936,1056,1144,1188,1248,1287,1404,1584,1716,1872,2288,2376,2574,2808,3168,3432,3744,3861,4576,4752,5148,5616,6864,7722,9504,10296,11232,13728,15444,20592,30888,41184,61776,123552

Determine the factors for 2598960 up to 123552 since that is the minimum of the 2 numbers
1,2,3,4,5,6,7,8,10,12,13,14,15,16,17,20,21,24,26,28,30,34,35,39,40,42,48,49,51,52,56,60,65,68,70,78,80,84,85,91,98,102,104,105,112,119,120,130,136,140,147,156,168,170,182,195,196,204,208,210,221,238,240,245,255,260,272,273,280,294,312,336,340,357,364,390,392,408,420,442,455,476,490,510,520,546,560,588,595,624,637,663,680,714,728,735,780,784,816,833,840,884,910,952,980,1020,1040,1092,1105,1176,1190,1274,1326,1360,1365,1428,1456,1470,1547,1560,1666,1680,1768,1785,1820,1904,1911,1960,2040,2184,2210,2352,2380,2499,2548,2652,2730,2856,2940,3094,3120,3185,3315,3332,3536,3570,3640,3822,3920,4080,4165,4368,4420,4641,4760,4998,5096,5304,5460,5712,5880,6188,6370,6630,6664,7140,7280,7644,7735,8330,8840,9282,9520,9555,9996,10192,10608,10829,10920,11760,12376,12495,12740,13260,13328,14280,15288,15470,16660,17680,18564,19110,19992,21658,21840,23205,24752,24990,25480,26520,28560,30576,30940,32487,33320,37128,38220,39984,43316,46410,49980,50960,53040,54145,61880,64974,66640,74256,76440,86632,92820,99960,108290

The common factors between them are 1,2,3,4,6,8,12,13,16,24,26,39,48,52,78,104,156,208,312,624
The greatest common factor between them is 624
Since the Greatest Common Factor of both numbers ≠ 1, the numbers are not relatively prime (co-prime)
Since the Greatest Common Factor of Both Numbers is both ≠ 1 and have a difference of two, the numbers are not twin prime






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