LCM for 11 and 22

The first method to find LCM for numbers 11 and 22 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 11 and 22 is 11, so

LCM = (11 × 22) ÷ 11

LCM = 242 ÷ 11

LCM = 22

The second method to find LCM for numbers 11 and 22 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 11: 11, 22, 33, 44

Multiples of 22: 22, 44, 66, 88, 110, 132, 154, 176, 198, 220, 242, 264, 286, 308, 330, 352, 374, 396, 418, 440, 462, 484, 506, 528, 550, 572, 594, 616, 638, 660, 682, 704, 726, 748, 770, 792, 814, 836, 858, 880, 902, 924, 946, 968, 990, 1012, 1034, 1056, 1078, 1100, 1122, 1144, 1166, 1188, 1210, 1232, 1254, 1276, 1298, 1320, 1342, 1364, 1386, 1408, 1430, 1452, 1474, 1496, 1518, 1540, 1562, 1584, 1606, 1628, 1650, 1672, 1694, 1716, 1738, 1760, 1782, 1804, 1826, 1848, 1870, 1892, 1914, 1936, 1958, 1980, 2002, 2024, 2046, 2068, 2090, 2112, 2134, 2156, 2178, 2200, 2222, 2244, 2266, 2288, 2310, 2332, 2354, 2376, 2398, 2420, 2442, 2464, 2486, 2508, 2530, 2552, 2574, 2596, 2618, 2640, 2662, 2684, 2706, 2728, 2750, 2772, 2794, 2816, 2838, 2860, 2882, 2904, 2926, 2948, 2970, 2992, 3014, 3036, 3058, 3080, 3102, 3124, 3146, 3168, 3190, 3212, 3234, 3256, 3278, 3300, 3322, 3344, 3366, 3388, 3410, 3432, 3454, 3476, 3498, 3520, 3542, 3564, 3586, 3608, 3630, 3652, 3674, 3696, 3718, 3740, 3762, 3784, 3806, 3828, 3850, 3872, 3894, 3916, 3938, 3960, 3982, 4004, 4026, 4048, 4070, 4092, 4114, 4136, 4158, 4180, 4202, 4224, 4246, 4268, 4290, 4312, 4334, 4356, 4378, 4400, 4422, 4444, 4466, 4488, 4510, 4532, 4554, 4576, 4598, 4620, 4642, 4664, 4686, 4708, 4730, 4752, 4774, 4796, 4818, 4840, 4862, 4884, 4906, 4928, 4950, 4972, 4994, 5016, 5038, 5060, 5082, 5104, 5126, 5148, 5170, 5192, 5214, 5236, 5258, 5280, 5302, 5324, 5346, 5368, 5390, 5412, 5434, 5456, 5478, 5500, 5522, 5544, 5566, 5588, 5610, 5632, 5654, 5676, 5698, 5720, 5742, 5764, 5786, 5808, 5830, 5852, 5874, 5896, 5918, 5940, 5962, 5984, 6006, 6028, 6050, 6072, 6094, 6116, 6138, 6160, 6182, 6204, 6226, 6248, 6270, 6292, 6314, 6336, 6358, 6380, 6402, 6424, 6446, 6468, 6490, 6512, 6534, 6556, 6578, 6600, 6622, 6644, 6666, 6688, 6710, 6732, 6754, 6776, 6798, 6820, 6842, 6864, 6886, 6908, 6930, 6952, 6974, 6996, 7018, 7040, 7062, 7084, 7106, 7128, 7150, 7172, 7194, 7216, 7238, 7260, 7282, 7304, 7326, 7348, 7370, 7392, 7414, 7436, 7458, 7480, 7502, 7524, 7546, 7568, 7590, 7612, 7634, 7656, 7678, 7700, 7722, 7744, 7766, 7788, 7810, 7832, 7854, 7876, 7898, 7920, 7942, 7964, 7986, 8008, 8030, 8052, 8074, 8096, 8118, 8140, 8162, 8184, 8206, 8228, 8250, 8272, 8294, 8316, 8338, 8360, 8382, 8404, 8426, 8448, 8470, 8492, 8514, 8536, 8558, 8580, 8602, 8624, 8646, 8668, 8690, 8712, 8734, 8756, 8778, 8800, 8822, 8844, 8866, 8888, 8910, 8932, 8954, 8976, 8998, 9020, 9042, 9064, 9086, 9108, 9130, 9152, 9174, 9196, 9218, 9240, 9262, 9284, 9306, 9328, 9350, 9372, 9394, 9416, 9438, 9460, 9482, 9504, 9526, 9548, 9570, 9592, 9614, 9636, 9658, 9680, 9702, 9724, 9746, 9768, 9790, 9812, 9834, 9856, 9878, 9900, 9922, 9944, 9966, 9988, 10010, 10032, 10054, 10076, 10098, 10120, 10142, 10164, 10186, 10208, 10230, 10252, 10274, 10296, 10318, 10340, 10362, 10384, 10406, 10428, 10450, 10472, 10494, 10516, 10538, 10560, 10582, 10604, 10626, 10648, 10670, 10692, 10714, 10736, 10758, 10780, 10802, 10824, 10846, 10868, 10890, 10912, 10934, 10956, 10978, 11000, 11022, 11044, 11066, 11088, 11110, 11132, 11154, 11176, 11198, 11220, 11242, 11264, 11286, 11308, 11330, 11352, 11374, 11396, 11418, 11440, 11462, 11484, 11506, 11528, 11550, 11572, 11594, 11616, 11638, 11660, 11682, 11704, 11726, 11748, 11770, 11792, 11814, 11836, 11858, 11880, 11902, 11924, 11946, 11968, 11990, 12012, 12034, 12056, 12078, 12100, 12122, 12144, 12166, 12188, 12210, 12232, 12254, 12276, 12298, 12320, 12342, 12364, 12386, 12408, 12430, 12452, 12474, 12496, 12518, 12540, 12562, 12584, 12606, 12628, 12650, 12672, 12694, 12716, 12738, 12760, 12782, 12804, 12826, 12848, 12870, 12892, 12914, 12936, 12958, 12980, 13002, 13024, 13046, 13068, 13090, 13112, 13134, 13156, 13178, 13200, 13222, 13244, 13266, 13288, 13310, 13332, 13354, 13376, 13398, 13420, 13442, 13464, 13486, 13508, 13530, 13552, 13574, 13596, 13618, 13640, 13662, 13684, 13706, 13728, 13750, 13772, 13794, 13816, 13838, 13860, 13882, 13904, 13926, 13948, 13970, 13992, 14014, 14036, 14058, 14080, 14102, 14124, 14146, 14168, 14190, 14212, 14234, 14256, 14278, 14300, 14322, 14344, 14366, 14388, 14410, 14432, 14454, 14476, 14498, 14520, 14542, 14564, 14586, 14608, 14630, 14652, 14674, 14696, 14718, 14740, 14762, 14784, 14806, 14828, 14850, 14872, 14894, 14916, 14938, 14960, 14982, 15004, 15026, 15048, 15070, 15092, 15114, 15136, 15158, 15180, 15202, 15224, 15246, 15268, 15290, 15312, 15334, 15356, 15378, 15400, 15422, 15444, 15466, 15488, 15510, 15532, 15554, 15576, 15598, 15620, 15642, 15664, 15686, 15708, 15730, 15752, 15774, 15796, 15818, 15840, 15862, 15884, 15906, 15928, 15950, 15972, 15994, 16016, 16038, 16060, 16082, 16104, 16126, 16148, 16170, 16192, 16214, 16236, 16258, 16280, 16302, 16324, 16346, 16368, 16390, 16412, 16434, 16456, 16478, 16500, 16522, 16544, 16566, 16588, 16610, 16632, 16654, 16676, 16698, 16720, 16742, 16764, 16786, 16808, 16830, 16852, 16874, 16896, 16918, 16940, 16962, 16984, 17006, 17028, 17050, 17072, 17094, 17116, 17138, 17160, 17182, 17204, 17226, 17248, 17270, 17292, 17314, 17336, 17358, 17380, 17402, 17424, 17446, 17468, 17490, 17512, 17534, 17556, 17578, 17600, 17622, 17644, 17666, 17688, 17710, 17732, 17754, 17776, 17798, 17820, 17842, 17864, 17886, 17908, 17930, 17952, 17974, 17996, 18018, 18040, 18062, 18084, 18106, 18128, 18150, 18172, 18194, 18216, 18238, 18260, 18282, 18304, 18326, 18348, 18370, 18392, 18414, 18436, 18458, 18480, 18502, 18524, 18546, 18568, 18590, 18612, 18634, 18656, 18678, 18700, 18722, 18744, 18766, 18788, 18810, 18832, 18854, 18876, 18898, 18920, 18942, 18964, 18986, 19008, 19030, 19052, 19074, 19096, 19118, 19140, 19162, 19184, 19206, 19228, 19250, 19272, 19294, 19316, 19338, 19360, 19382, 19404, 19426, 19448, 19470, 19492, 19514, 19536, 19558, 19580, 19602, 19624, 19646, 19668, 19690, 19712, 19734, 19756, 19778, 19800, 19822, 19844, 19866, 19888, 19910, 19932, 19954, 19976, 19998, 20020, 20042, 20064, 20086, 20108, 20130, 20152, 20174, 20196, 20218, 20240, 20262, 20284, 20306, 20328, 20350, 20372, 20394, 20416, 20438, 20460, 20482, 20504, 20526, 20548, 20570, 20592, 20614, 20636, 20658, 20680, 20702, 20724, 20746, 20768, 20790, 20812, 20834, 20856, 20878, 20900, 20922, 20944, 20966, 20988, 21010, 21032, 21054, 21076, 21098, 21120, 21142, 21164, 21186, 21208, 21230, 21252, 21274, 21296, 21318, 21340, 21362, 21384, 21406, 21428, 21450, 21472, 21494, 21516, 21538, 21560, 21582, 21604, 21626, 21648, 21670, 21692, 21714, 21736, 21758, 21780, 21802, 21824, 21846, 21868, 21890, 21912, 21934, 21956, 21978, 22000, [...], 22

So the LCM for 11 and 22 is 22

Another method to find LCM for numbers 11 and 22 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: