What is the LCM of 81 and 180?

"Least Common Multiple" Calculator

What's the Least Common Multiple (LCM) of 81 and 180?

Answer: LCM of 81 and 180 is 1,620

(One thousand, six hundred twenty)

Finding LCM for 81 and 180 using GCF's of these numbers

The first method to find LCM for numbers 81 and 180 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 81 and 180 is 9, so

LCM = (81 × 180) ÷ 9

LCM = 14580 ÷ 9

LCM = 1620

Finding LCM for 81 and 180 by Listing Multiples

The second method to find LCM for numbers 81 and 180 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 81: 81, 162, 243, 324, 405, 486, 567, 648, 729, 810, 891, 972, 1053, 1134, 1215, 1296, 1377, 1458, 1539, 1620, 1701, 1782

Multiples of 180: 180, 360, 540, 720, 900, 1080, 1260, 1440, 1620, 1800, 1980

So the LCM for 81 and 180 is 1620

Finding LCM for 81 and 180 by Prime Factorization

Another method to find LCM for numbers 81 and 180 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 81: 3, 3, 3, 3 (exponent form: 3⁴)

All Prime Factors of 180: 2, 2, 3, 3, 5 (exponent form: 2², 3², 5¹)

3⁴ × 2² × 5¹ = 1620

About "Least Common Multiple" Calculator

This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 81 and 180? (The answer is: 1620). Select the first number (e.g. '81') and the second number (e.g. '180'). After that hit the 'Calculate' button.

Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers

"Least Common Multiple" Calculator

LCM Table

Number 1	Number 2	LCM
66	180	1980
67	180	12060
68	180	3060
69	180	4140
70	180	1260
71	180	12780
72	180	360
73	180	13140
74	180	6660
75	180	900
76	180	3420
77	180	13860
78	180	2340
79	180	14220
80	180	720
81	180	1620
82	180	7380
83	180	14940
84	180	1260
85	180	3060
86	180	7740
87	180	5220
88	180	3960
89	180	16020
90	180	180
91	180	16380
92	180	4140
93	180	5580
94	180	8460
95	180	3420

LCM for 81 and 180

"Least Common Multiple" Calculator

What's the Least Common Multiple (LCM) of 81 and 180?

Finding LCM for 81 and 180 using GCF's of these numbers

Finding LCM for 81 and 180 by Listing Multiples

Finding LCM for 81 and 180 by Prime Factorization

About "Least Common Multiple" Calculator

"Least Common Multiple" Calculator

LCM Table

FAQ

What's the Least Common Multiple (LCM) of 81 and 180?

See Also