LCM for 55 and 4000

The first method to find LCM for numbers 55 and 4000 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 55 and 4000 is 5, so

LCM = (55 × 4000) ÷ 5

LCM = 220000 ÷ 5

LCM = 44000

The second method to find LCM for numbers 55 and 4000 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 55: 55, 110, 165, 220, 275, 330, 385, 440, 495, 550, 605, 660, 715, 770, 825, 880, 935, 990, 1045, 1100, 1155, 1210, 1265, 1320, 1375, 1430, 1485, 1540, 1595, 1650, 1705, 1760, 1815, 1870, 1925, 1980, 2035, 2090, 2145, 2200, 2255, 2310, 2365, 2420, 2475, 2530, 2585, 2640, 2695, 2750, 2805, 2860, 2915, 2970, 3025, 3080, 3135, 3190, 3245, 3300, 3355, 3410, 3465, 3520, 3575, 3630, 3685, 3740, 3795, 3850, 3905, 3960, 4015, 4070, 4125, 4180, 4235, 4290, 4345, 4400, 4455, 4510, 4565, 4620, 4675, 4730, 4785, 4840, 4895, 4950, 5005, 5060, 5115, 5170, 5225, 5280, 5335, 5390, 5445, 5500, 5555, 5610, 5665, 5720, 5775, 5830, 5885, 5940, 5995, 6050, 6105, 6160, 6215, 6270, 6325, 6380, 6435, 6490, 6545, 6600, 6655, 6710, 6765, 6820, 6875, 6930, 6985, 7040, 7095, 7150, 7205, 7260, 7315, 7370, 7425, 7480, 7535, 7590, 7645, 7700, 7755, 7810, 7865, 7920, 7975, 8030, 8085, 8140, 8195, 8250, 8305, 8360, 8415, 8470, 8525, 8580, 8635, 8690, 8745, 8800, 8855, 8910, 8965, 9020, 9075, 9130, 9185, 9240, 9295, 9350, 9405, 9460, 9515, 9570, 9625, 9680, 9735, 9790, 9845, 9900, 9955, 10010, 10065, 10120, 10175, 10230, 10285, 10340, 10395, 10450, 10505, 10560, 10615, 10670, 10725, 10780, 10835, 10890, 10945, 11000, 11055, 11110, 11165, 11220, 11275, 11330, 11385, 11440, 11495, 11550, 11605, 11660, 11715, 11770, 11825, 11880, 11935, 11990, 12045, 12100, 12155, 12210, 12265, 12320, 12375, 12430, 12485, 12540, 12595, 12650, 12705, 12760, 12815, 12870, 12925, 12980, 13035, 13090, 13145, 13200, 13255, 13310, 13365, 13420, 13475, 13530, 13585, 13640, 13695, 13750, 13805, 13860, 13915, 13970, 14025, 14080, 14135, 14190, 14245, 14300, 14355, 14410, 14465, 14520, 14575, 14630, 14685, 14740, 14795, 14850, 14905, 14960, 15015, 15070, 15125, 15180, 15235, 15290, 15345, 15400, 15455, 15510, 15565, 15620, 15675, 15730, 15785, 15840, 15895, 15950, 16005, 16060, 16115, 16170, 16225, 16280, 16335, 16390, 16445, 16500, 16555, 16610, 16665, 16720, 16775, 16830, 16885, 16940, 16995, 17050, 17105, 17160, 17215, 17270, 17325, 17380, 17435, 17490, 17545, 17600, 17655, 17710, 17765, 17820, 17875, 17930, 17985, 18040, 18095, 18150, 18205, 18260, 18315, 18370, 18425, 18480, 18535, 18590, 18645, 18700, 18755, 18810, 18865, 18920, 18975, 19030, 19085, 19140, 19195, 19250, 19305, 19360, 19415, 19470, 19525, 19580, 19635, 19690, 19745, 19800, 19855, 19910, 19965, 20020, 20075, 20130, 20185, 20240, 20295, 20350, 20405, 20460, 20515, 20570, 20625, 20680, 20735, 20790, 20845, 20900, 20955, 21010, 21065, 21120, 21175, 21230, 21285, 21340, 21395, 21450, 21505, 21560, 21615, 21670, 21725, 21780, 21835, 21890, 21945, 22000, 22055, 22110, 22165, 22220, 22275, 22330, 22385, 22440, 22495, 22550, 22605, 22660, 22715, 22770, 22825, 22880, 22935, 22990, 23045, 23100, 23155, 23210, 23265, 23320, 23375, 23430, 23485, 23540, 23595, 23650, 23705, 23760, 23815, 23870, 23925, 23980, 24035, 24090, 24145, 24200, 24255, 24310, 24365, 24420, 24475, 24530, 24585, 24640, 24695, 24750, 24805, 24860, 24915, 24970, 25025, 25080, 25135, 25190, 25245, 25300, 25355, 25410, 25465, 25520, 25575, 25630, 25685, 25740, 25795, 25850, 25905, 25960, 26015, 26070, 26125, 26180, 26235, 26290, 26345, 26400, 26455, 26510, 26565, 26620, 26675, 26730, 26785, 26840, 26895, 26950, 27005, 27060, 27115, 27170, 27225, 27280, 27335, 27390, 27445, 27500, 27555, 27610, 27665, 27720, 27775, 27830, 27885, 27940, 27995, 28050, 28105, 28160, 28215, 28270, 28325, 28380, 28435, 28490, 28545, 28600, 28655, 28710, 28765, 28820, 28875, 28930, 28985, 29040, 29095, 29150, 29205, 29260, 29315, 29370, 29425, 29480, 29535, 29590, 29645, 29700, 29755, 29810, 29865, 29920, 29975, 30030, 30085, 30140, 30195, 30250, 30305, 30360, 30415, 30470, 30525, 30580, 30635, 30690, 30745, 30800, 30855, 30910, 30965, 31020, 31075, 31130, 31185, 31240, 31295, 31350, 31405, 31460, 31515, 31570, 31625, 31680, 31735, 31790, 31845, 31900, 31955, 32010, 32065, 32120, 32175, 32230, 32285, 32340, 32395, 32450, 32505, 32560, 32615, 32670, 32725, 32780, 32835, 32890, 32945, 33000, 33055, 33110, 33165, 33220, 33275, 33330, 33385, 33440, 33495, 33550, 33605, 33660, 33715, 33770, 33825, 33880, 33935, 33990, 34045, 34100, 34155, 34210, 34265, 34320, 34375, 34430, 34485, 34540, 34595, 34650, 34705, 34760, 34815, 34870, 34925, 34980, 35035, 35090, 35145, 35200, 35255, 35310, 35365, 35420, 35475, 35530, 35585, 35640, 35695, 35750, 35805, 35860, 35915, 35970, 36025, 36080, 36135, 36190, 36245, 36300, 36355, 36410, 36465, 36520, 36575, 36630, 36685, 36740, 36795, 36850, 36905, 36960, 37015, 37070, 37125, 37180, 37235, 37290, 37345, 37400, 37455, 37510, 37565, 37620, 37675, 37730, 37785, 37840, 37895, 37950, 38005, 38060, 38115, 38170, 38225, 38280, 38335, 38390, 38445, 38500, 38555, 38610, 38665, 38720, 38775, 38830, 38885, 38940, 38995, 39050, 39105, 39160, 39215, 39270, 39325, 39380, 39435, 39490, 39545, 39600, 39655, 39710, 39765, 39820, 39875, 39930, 39985, 40040, 40095, 40150, 40205, 40260, 40315, 40370, 40425, 40480, 40535, 40590, 40645, 40700, 40755, 40810, 40865, 40920, 40975, 41030, 41085, 41140, 41195, 41250, 41305, 41360, 41415, 41470, 41525, 41580, 41635, 41690, 41745, 41800, 41855, 41910, 41965, 42020, 42075, 42130, 42185, 42240, 42295, 42350, 42405, 42460, 42515, 42570, 42625, 42680, 42735, 42790, 42845, 42900, 42955, 43010, 43065, 43120, 43175, 43230, 43285, 43340, 43395, 43450, 43505, 43560, 43615, 43670, 43725, 43780, 43835, 43890, 43945, 44000, 44055, 44110

Multiples of 4000: 4000, 8000, 12000, 16000, 20000, 24000, 28000, 32000, 36000, 40000, 44000, 48000, 52000

So the LCM for 55 and 4000 is 44000

Another method to find LCM for numbers 55 and 4000 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: