LCM for 85 and 170

The first method to find LCM for numbers 85 and 170 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 85 and 170 is 85, so

LCM = (85 × 170) ÷ 85

LCM = 14450 ÷ 85

LCM = 170

The second method to find LCM for numbers 85 and 170 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 85: 85, 170, 255, 340

Multiples of 170: 170, 340, 510, 680, 850, 1020, 1190, 1360, 1530, 1700, 1870, 2040, 2210, 2380, 2550, 2720, 2890, 3060, 3230, 3400, 3570, 3740, 3910, 4080, 4250, 4420, 4590, 4760, 4930, 5100, 5270, 5440, 5610, 5780, 5950, 6120, 6290, 6460, 6630, 6800, 6970, 7140, 7310, 7480, 7650, 7820, 7990, 8160, 8330, 8500, 8670, 8840, 9010, 9180, 9350, 9520, 9690, 9860, 10030, 10200, 10370, 10540, 10710, 10880, 11050, 11220, 11390, 11560, 11730, 11900, 12070, 12240, 12410, 12580, 12750, 12920, 13090, 13260, 13430, 13600, 13770, 13940, 14110, 14280, 14450, 14620, 14790, 14960, 15130, 15300, 15470, 15640, 15810, 15980, 16150, 16320, 16490, 16660, 16830, 17000, 17170, 17340, 17510, 17680, 17850, 18020, 18190, 18360, 18530, 18700, 18870, 19040, 19210, 19380, 19550, 19720, 19890, 20060, 20230, 20400, 20570, 20740, 20910, 21080, 21250, 21420, 21590, 21760, 21930, 22100, 22270, 22440, 22610, 22780, 22950, 23120, 23290, 23460, 23630, 23800, 23970, 24140, 24310, 24480, 24650, 24820, 24990, 25160, 25330, 25500, 25670, 25840, 26010, 26180, 26350, 26520, 26690, 26860, 27030, 27200, 27370, 27540, 27710, 27880, 28050, 28220, 28390, 28560, 28730, 28900, 29070, 29240, 29410, 29580, 29750, 29920, 30090, 30260, 30430, 30600, 30770, 30940, 31110, 31280, 31450, 31620, 31790, 31960, 32130, 32300, 32470, 32640, 32810, 32980, 33150, 33320, 33490, 33660, 33830, 34000, 34170, 34340, 34510, 34680, 34850, 35020, 35190, 35360, 35530, 35700, 35870, 36040, 36210, 36380, 36550, 36720, 36890, 37060, 37230, 37400, 37570, 37740, 37910, 38080, 38250, 38420, 38590, 38760, 38930, 39100, 39270, 39440, 39610, 39780, 39950, 40120, 40290, 40460, 40630, 40800, 40970, 41140, 41310, 41480, 41650, 41820, 41990, 42160, 42330, 42500, 42670, 42840, 43010, 43180, 43350, 43520, 43690, 43860, 44030, 44200, 44370, 44540, 44710, 44880, 45050, 45220, 45390, 45560, 45730, 45900, 46070, 46240, 46410, 46580, 46750, 46920, 47090, 47260, 47430, 47600, 47770, 47940, 48110, 48280, 48450, 48620, 48790, 48960, 49130, 49300, 49470, 49640, 49810, 49980, 50150, 50320, 50490, 50660, 50830, 51000, 51170, 51340, 51510, 51680, 51850, 52020, 52190, 52360, 52530, 52700, 52870, 53040, 53210, 53380, 53550, 53720, 53890, 54060, 54230, 54400, 54570, 54740, 54910, 55080, 55250, 55420, 55590, 55760, 55930, 56100, 56270, 56440, 56610, 56780, 56950, 57120, 57290, 57460, 57630, 57800, 57970, 58140, 58310, 58480, 58650, 58820, 58990, 59160, 59330, 59500, 59670, 59840, 60010, 60180, 60350, 60520, 60690, 60860, 61030, 61200, 61370, 61540, 61710, 61880, 62050, 62220, 62390, 62560, 62730, 62900, 63070, 63240, 63410, 63580, 63750, 63920, 64090, 64260, 64430, 64600, 64770, 64940, 65110, 65280, 65450, 65620, 65790, 65960, 66130, 66300, 66470, 66640, 66810, 66980, 67150, 67320, 67490, 67660, 67830, 68000, 68170, 68340, 68510, 68680, 68850, 69020, 69190, 69360, 69530, 69700, 69870, 70040, 70210, 70380, 70550, 70720, 70890, 71060, 71230, 71400, 71570, 71740, 71910, 72080, 72250, 72420, 72590, 72760, 72930, 73100, 73270, 73440, 73610, 73780, 73950, 74120, 74290, 74460, 74630, 74800, 74970, 75140, 75310, 75480, 75650, 75820, 75990, 76160, 76330, 76500, 76670, 76840, 77010, 77180, 77350, 77520, 77690, 77860, 78030, 78200, 78370, 78540, 78710, 78880, 79050, 79220, 79390, 79560, 79730, 79900, 80070, 80240, 80410, 80580, 80750, 80920, 81090, 81260, 81430, 81600, 81770, 81940, 82110, 82280, 82450, 82620, 82790, 82960, 83130, 83300, 83470, 83640, 83810, 83980, 84150, 84320, 84490, 84660, 84830, 85000, 85170, 85340, 85510, 85680, 85850, 86020, 86190, 86360, 86530, 86700, 86870, 87040, 87210, 87380, 87550, 87720, 87890, 88060, 88230, 88400, 88570, 88740, 88910, 89080, 89250, 89420, 89590, 89760, 89930, 90100, 90270, 90440, 90610, 90780, 90950, 91120, 91290, 91460, 91630, 91800, 91970, 92140, 92310, 92480, 92650, 92820, 92990, 93160, 93330, 93500, 93670, 93840, 94010, 94180, 94350, 94520, 94690, 94860, 95030, 95200, 95370, 95540, 95710, 95880, 96050, 96220, 96390, 96560, 96730, 96900, 97070, 97240, 97410, 97580, 97750, 97920, 98090, 98260, 98430, 98600, 98770, 98940, 99110, 99280, 99450, 99620, 99790, 99960, 100130, 100300, 100470, 100640, 100810, 100980, 101150, 101320, 101490, 101660, 101830, 102000, 102170, 102340, 102510, 102680, 102850, 103020, 103190, 103360, 103530, 103700, 103870, 104040, 104210, 104380, 104550, 104720, 104890, 105060, 105230, 105400, 105570, 105740, 105910, 106080, 106250, 106420, 106590, 106760, 106930, 107100, 107270, 107440, 107610, 107780, 107950, 108120, 108290, 108460, 108630, 108800, 108970, 109140, 109310, 109480, 109650, 109820, 109990, 110160, 110330, 110500, 110670, 110840, 111010, 111180, 111350, 111520, 111690, 111860, 112030, 112200, 112370, 112540, 112710, 112880, 113050, 113220, 113390, 113560, 113730, 113900, 114070, 114240, 114410, 114580, 114750, 114920, 115090, 115260, 115430, 115600, 115770, 115940, 116110, 116280, 116450, 116620, 116790, 116960, 117130, 117300, 117470, 117640, 117810, 117980, 118150, 118320, 118490, 118660, 118830, 119000, 119170, 119340, 119510, 119680, 119850, 120020, 120190, 120360, 120530, 120700, 120870, 121040, 121210, 121380, 121550, 121720, 121890, 122060, 122230, 122400, 122570, 122740, 122910, 123080, 123250, 123420, 123590, 123760, 123930, 124100, 124270, 124440, 124610, 124780, 124950, 125120, 125290, 125460, 125630, 125800, 125970, 126140, 126310, 126480, 126650, 126820, 126990, 127160, 127330, 127500, 127670, 127840, 128010, 128180, 128350, 128520, 128690, 128860, 129030, 129200, 129370, 129540, 129710, 129880, 130050, 130220, 130390, 130560, 130730, 130900, 131070, 131240, 131410, 131580, 131750, 131920, 132090, 132260, 132430, 132600, 132770, 132940, 133110, 133280, 133450, 133620, 133790, 133960, 134130, 134300, 134470, 134640, 134810, 134980, 135150, 135320, 135490, 135660, 135830, 136000, 136170, 136340, 136510, 136680, 136850, 137020, 137190, 137360, 137530, 137700, 137870, 138040, 138210, 138380, 138550, 138720, 138890, 139060, 139230, 139400, 139570, 139740, 139910, 140080, 140250, 140420, 140590, 140760, 140930, 141100, 141270, 141440, 141610, 141780, 141950, 142120, 142290, 142460, 142630, 142800, 142970, 143140, 143310, 143480, 143650, 143820, 143990, 144160, 144330, 144500, 144670, 144840, 145010, 145180, 145350, 145520, 145690, 145860, 146030, 146200, 146370, 146540, 146710, 146880, 147050, 147220, 147390, 147560, 147730, 147900, 148070, 148240, 148410, 148580, 148750, 148920, 149090, 149260, 149430, 149600, 149770, 149940, 150110, 150280, 150450, 150620, 150790, 150960, 151130, 151300, 151470, 151640, 151810, 151980, 152150, 152320, 152490, 152660, 152830, 153000, 153170, 153340, 153510, 153680, 153850, 154020, 154190, 154360, 154530, 154700, 154870, 155040, 155210, 155380, 155550, 155720, 155890, 156060, 156230, 156400, 156570, 156740, 156910, 157080, 157250, 157420, 157590, 157760, 157930, 158100, 158270, 158440, 158610, 158780, 158950, 159120, 159290, 159460, 159630, 159800, 159970, 160140, 160310, 160480, 160650, 160820, 160990, 161160, 161330, 161500, 161670, 161840, 162010, 162180, 162350, 162520, 162690, 162860, 163030, 163200, 163370, 163540, 163710, 163880, 164050, 164220, 164390, 164560, 164730, 164900, 165070, 165240, 165410, 165580, 165750, 165920, 166090, 166260, 166430, 166600, 166770, 166940, 167110, 167280, 167450, 167620, 167790, 167960, 168130, 168300, 168470, 168640, 168810, 168980, 169150, 169320, 169490, 169660, 169830, 170000, [...], 170

So the LCM for 85 and 170 is 170

Another method to find LCM for numbers 85 and 170 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors: