LCM for 80 and 160

The first method to find LCM for numbers 80 and 160 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 80 and 160 is 80, so

LCM = (80 × 160) ÷ 80

LCM = 12800 ÷ 80

LCM = 160

The second method to find LCM for numbers 80 and 160 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 80: 80, 160, 240, 320

Multiples of 160: 160, 320, 480, 640, 800, 960, 1120, 1280, 1440, 1600, 1760, 1920, 2080, 2240, 2400, 2560, 2720, 2880, 3040, 3200, 3360, 3520, 3680, 3840, 4000, 4160, 4320, 4480, 4640, 4800, 4960, 5120, 5280, 5440, 5600, 5760, 5920, 6080, 6240, 6400, 6560, 6720, 6880, 7040, 7200, 7360, 7520, 7680, 7840, 8000, 8160, 8320, 8480, 8640, 8800, 8960, 9120, 9280, 9440, 9600, 9760, 9920, 10080, 10240, 10400, 10560, 10720, 10880, 11040, 11200, 11360, 11520, 11680, 11840, 12000, 12160, 12320, 12480, 12640, 12800, 12960, 13120, 13280, 13440, 13600, 13760, 13920, 14080, 14240, 14400, 14560, 14720, 14880, 15040, 15200, 15360, 15520, 15680, 15840, 16000, 16160, 16320, 16480, 16640, 16800, 16960, 17120, 17280, 17440, 17600, 17760, 17920, 18080, 18240, 18400, 18560, 18720, 18880, 19040, 19200, 19360, 19520, 19680, 19840, 20000, 20160, 20320, 20480, 20640, 20800, 20960, 21120, 21280, 21440, 21600, 21760, 21920, 22080, 22240, 22400, 22560, 22720, 22880, 23040, 23200, 23360, 23520, 23680, 23840, 24000, 24160, 24320, 24480, 24640, 24800, 24960, 25120, 25280, 25440, 25600, 25760, 25920, 26080, 26240, 26400, 26560, 26720, 26880, 27040, 27200, 27360, 27520, 27680, 27840, 28000, 28160, 28320, 28480, 28640, 28800, 28960, 29120, 29280, 29440, 29600, 29760, 29920, 30080, 30240, 30400, 30560, 30720, 30880, 31040, 31200, 31360, 31520, 31680, 31840, 32000, 32160, 32320, 32480, 32640, 32800, 32960, 33120, 33280, 33440, 33600, 33760, 33920, 34080, 34240, 34400, 34560, 34720, 34880, 35040, 35200, 35360, 35520, 35680, 35840, 36000, 36160, 36320, 36480, 36640, 36800, 36960, 37120, 37280, 37440, 37600, 37760, 37920, 38080, 38240, 38400, 38560, 38720, 38880, 39040, 39200, 39360, 39520, 39680, 39840, 40000, 40160, 40320, 40480, 40640, 40800, 40960, 41120, 41280, 41440, 41600, 41760, 41920, 42080, 42240, 42400, 42560, 42720, 42880, 43040, 43200, 43360, 43520, 43680, 43840, 44000, 44160, 44320, 44480, 44640, 44800, 44960, 45120, 45280, 45440, 45600, 45760, 45920, 46080, 46240, 46400, 46560, 46720, 46880, 47040, 47200, 47360, 47520, 47680, 47840, 48000, 48160, 48320, 48480, 48640, 48800, 48960, 49120, 49280, 49440, 49600, 49760, 49920, 50080, 50240, 50400, 50560, 50720, 50880, 51040, 51200, 51360, 51520, 51680, 51840, 52000, 52160, 52320, 52480, 52640, 52800, 52960, 53120, 53280, 53440, 53600, 53760, 53920, 54080, 54240, 54400, 54560, 54720, 54880, 55040, 55200, 55360, 55520, 55680, 55840, 56000, 56160, 56320, 56480, 56640, 56800, 56960, 57120, 57280, 57440, 57600, 57760, 57920, 58080, 58240, 58400, 58560, 58720, 58880, 59040, 59200, 59360, 59520, 59680, 59840, 60000, 60160, 60320, 60480, 60640, 60800, 60960, 61120, 61280, 61440, 61600, 61760, 61920, 62080, 62240, 62400, 62560, 62720, 62880, 63040, 63200, 63360, 63520, 63680, 63840, 64000, 64160, 64320, 64480, 64640, 64800, 64960, 65120, 65280, 65440, 65600, 65760, 65920, 66080, 66240, 66400, 66560, 66720, 66880, 67040, 67200, 67360, 67520, 67680, 67840, 68000, 68160, 68320, 68480, 68640, 68800, 68960, 69120, 69280, 69440, 69600, 69760, 69920, 70080, 70240, 70400, 70560, 70720, 70880, 71040, 71200, 71360, 71520, 71680, 71840, 72000, 72160, 72320, 72480, 72640, 72800, 72960, 73120, 73280, 73440, 73600, 73760, 73920, 74080, 74240, 74400, 74560, 74720, 74880, 75040, 75200, 75360, 75520, 75680, 75840, 76000, 76160, 76320, 76480, 76640, 76800, 76960, 77120, 77280, 77440, 77600, 77760, 77920, 78080, 78240, 78400, 78560, 78720, 78880, 79040, 79200, 79360, 79520, 79680, 79840, 80000, 80160, 80320, 80480, 80640, 80800, 80960, 81120, 81280, 81440, 81600, 81760, 81920, 82080, 82240, 82400, 82560, 82720, 82880, 83040, 83200, 83360, 83520, 83680, 83840, 84000, 84160, 84320, 84480, 84640, 84800, 84960, 85120, 85280, 85440, 85600, 85760, 85920, 86080, 86240, 86400, 86560, 86720, 86880, 87040, 87200, 87360, 87520, 87680, 87840, 88000, 88160, 88320, 88480, 88640, 88800, 88960, 89120, 89280, 89440, 89600, 89760, 89920, 90080, 90240, 90400, 90560, 90720, 90880, 91040, 91200, 91360, 91520, 91680, 91840, 92000, 92160, 92320, 92480, 92640, 92800, 92960, 93120, 93280, 93440, 93600, 93760, 93920, 94080, 94240, 94400, 94560, 94720, 94880, 95040, 95200, 95360, 95520, 95680, 95840, 96000, 96160, 96320, 96480, 96640, 96800, 96960, 97120, 97280, 97440, 97600, 97760, 97920, 98080, 98240, 98400, 98560, 98720, 98880, 99040, 99200, 99360, 99520, 99680, 99840, 100000, 100160, 100320, 100480, 100640, 100800, 100960, 101120, 101280, 101440, 101600, 101760, 101920, 102080, 102240, 102400, 102560, 102720, 102880, 103040, 103200, 103360, 103520, 103680, 103840, 104000, 104160, 104320, 104480, 104640, 104800, 104960, 105120, 105280, 105440, 105600, 105760, 105920, 106080, 106240, 106400, 106560, 106720, 106880, 107040, 107200, 107360, 107520, 107680, 107840, 108000, 108160, 108320, 108480, 108640, 108800, 108960, 109120, 109280, 109440, 109600, 109760, 109920, 110080, 110240, 110400, 110560, 110720, 110880, 111040, 111200, 111360, 111520, 111680, 111840, 112000, 112160, 112320, 112480, 112640, 112800, 112960, 113120, 113280, 113440, 113600, 113760, 113920, 114080, 114240, 114400, 114560, 114720, 114880, 115040, 115200, 115360, 115520, 115680, 115840, 116000, 116160, 116320, 116480, 116640, 116800, 116960, 117120, 117280, 117440, 117600, 117760, 117920, 118080, 118240, 118400, 118560, 118720, 118880, 119040, 119200, 119360, 119520, 119680, 119840, 120000, 120160, 120320, 120480, 120640, 120800, 120960, 121120, 121280, 121440, 121600, 121760, 121920, 122080, 122240, 122400, 122560, 122720, 122880, 123040, 123200, 123360, 123520, 123680, 123840, 124000, 124160, 124320, 124480, 124640, 124800, 124960, 125120, 125280, 125440, 125600, 125760, 125920, 126080, 126240, 126400, 126560, 126720, 126880, 127040, 127200, 127360, 127520, 127680, 127840, 128000, 128160, 128320, 128480, 128640, 128800, 128960, 129120, 129280, 129440, 129600, 129760, 129920, 130080, 130240, 130400, 130560, 130720, 130880, 131040, 131200, 131360, 131520, 131680, 131840, 132000, 132160, 132320, 132480, 132640, 132800, 132960, 133120, 133280, 133440, 133600, 133760, 133920, 134080, 134240, 134400, 134560, 134720, 134880, 135040, 135200, 135360, 135520, 135680, 135840, 136000, 136160, 136320, 136480, 136640, 136800, 136960, 137120, 137280, 137440, 137600, 137760, 137920, 138080, 138240, 138400, 138560, 138720, 138880, 139040, 139200, 139360, 139520, 139680, 139840, 140000, 140160, 140320, 140480, 140640, 140800, 140960, 141120, 141280, 141440, 141600, 141760, 141920, 142080, 142240, 142400, 142560, 142720, 142880, 143040, 143200, 143360, 143520, 143680, 143840, 144000, 144160, 144320, 144480, 144640, 144800, 144960, 145120, 145280, 145440, 145600, 145760, 145920, 146080, 146240, 146400, 146560, 146720, 146880, 147040, 147200, 147360, 147520, 147680, 147840, 148000, 148160, 148320, 148480, 148640, 148800, 148960, 149120, 149280, 149440, 149600, 149760, 149920, 150080, 150240, 150400, 150560, 150720, 150880, 151040, 151200, 151360, 151520, 151680, 151840, 152000, 152160, 152320, 152480, 152640, 152800, 152960, 153120, 153280, 153440, 153600, 153760, 153920, 154080, 154240, 154400, 154560, 154720, 154880, 155040, 155200, 155360, 155520, 155680, 155840, 156000, 156160, 156320, 156480, 156640, 156800, 156960, 157120, 157280, 157440, 157600, 157760, 157920, 158080, 158240, 158400, 158560, 158720, 158880, 159040, 159200, 159360, 159520, 159680, 159840, 160000, [...], 160

So the LCM for 80 and 160 is 160

Another method to find LCM for numbers 80 and 160 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: