Enter the 2 numbers you want to evaluate and press the appropriate button Search Engine Shortcut Examples:

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

gcf 50 + 75

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

Determine the Greatest Common Factor (GCF) of (123552,2598960)

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

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

Since the Greatest Common Factor of both numbers ≠ 1, the numbers are

Since the Greatest Common Factor of Both Numbers is both ≠ 1 and have a difference of two, the numbers are not twin prime

Go premium to download this lesson to Excel.