LCM for 81 and 243

"Least Common Multiple" Calculator

Least Common Multiple of

and

What's the Least Common Multiple (LCM) of 81 and 243?

Answer: LCM of 81 and 243 is 243

(Two hundred forty-three)

Finding LCM for 81 and 243 using GCF's of these numbers

The first method to find LCM for numbers 81 and 243 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 81 and 243 is 81, so

LCM = (81 × 243) ÷ 81

LCM = 19683 ÷ 81

LCM = 243

Finding LCM for 81 and 243 by Listing Multiples

The second method to find LCM for numbers 81 and 243 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 81: 81, 162, 243, 324, 405

Multiples of 243: 243, 486, 729, 972, 1215, [...], 243

So the LCM for 81 and 243 is 243

Finding LCM for 81 and 243 by Prime Factorization

Another method to find LCM for numbers 81 and 243 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 243: 3, 3, 3, 3, 3 (exponent form: 35)

35 = 243

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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 243? (The answer is: 243). Select the first number (e.g. '81') and the second number (e.g. '243'). 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

Least Common Multiple of

and

LCM Table

Number 1Number 2LCM
662435346
6724316281
6824316524
692435589
7024317010
7124317253
722431944
7324317739
7424317982
752436075
7624318468
7724318711
782436318
7924319197
8024319440
81243243
8224319926
8324320169
842436804
8524320655
8624320898
872437047
8824321384
8924321627
902432430
9124322113
9224322356
932437533
9424322842
9524323085

FAQ

What's the Least Common Multiple (LCM) of 81 and 243?

LCM of 81 and 243 is 243

See Also