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Last updated on May 26th, 2025

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LCM of 19 and 57

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LCM is both a common multiple and the smallest value between the numbers 19 and 57. We apply LCM in basic arithmetic and in real life-like instances where we find the smallest common time interval to align and schedule events etc.

LCM of 19 and 57 for Indonesian Students
Professor Greenline from BrightChamps

LCM of 19 and 57

The LCM of 19 and 57 is 57. The LCM can be ascertained using anyone from the three methods discussed below. 
 

Professor Greenline from BrightChamps

LCM of 19 and 57 Using Listing the Multiples

 list multiples of the numbers 


19= 19,38,57,…


57= 57,114,171,…


Find the smallest number and the common number 


LCM(19,57) = 57
 

Professor Greenline from BrightChamps

LCM of 19 and 57 Using Prime Factorization

Prime factorize the numbers 


19 = 19  — it is a prime number 


57 = 19×3 


Multiply the highest powers 


19×3 


LCM(19,57) = 57 
 

Professor Greenline from BrightChamps

LCM of [Topic] Using Division Method

  • Write the numbers in a row 

 

  • Divide them by their common prime factors 

 

  • Carry forward the numbers that are not divided by the previously chosen number

 

  • Continue dividing until the remainder is ‘1’ 

 

  • Multiply the divisors to find the LCM

 

  • LCM (19,57) = 57 
Max Pointing Out Common Math Mistakes

Common mistakes and How to avoid them while finding the LCM of 19 and 57

Listed here are a few mistakes that one can commit when trying to find the LCM of the numbers 19 and 57. Try to avoid them. 
 

Mistake 1

Red Cross Icon Indicating Mistakes to Avoid in This Math Topic

 listing incorrect multiples 
 

Green Checkmark Icon Indicating Correct Solutions in This Math Topic

 if the LCM of given numbers is 57, double-check that the number appears on the list of both 19 and 57. 

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LCM of 19 and 57 Examples

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Max, the Girl Character from BrightChamps

Problem 1

A project needs to be completed every 19 days, and an associated report is submitted every 57 days. What percentage of the project cycle aligns with the report submission?

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Total time to align both cycles: LCM(19, 57) = 57 days


Percentage of alignment = (19 ÷ 57) × 100 = 33.33%
 

Explanation

 The project cycle aligns with the report submission every 57 days, which is 33.33% of the project cycle.
 

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Max, the Girl Character from BrightChamps

Problem 2

A machine performs an operation every 19 hours, while another machine performs its operation every 57 hours. If both machines started at the same time, when will they operate together again?

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

LCM(a, b) = a×b/HCF(a, b) 


LCM (a, b) = 19×57/19 


LCM(19, 57) = 57 hours
 

Explanation

Both machines will operate together again in 57 hours.

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Max, the Girl Character from BrightChamps

Problem 3

Verify the relationship between the LCM and HCF of 19 and 57

Ray, the Boy Character from BrightChamps Saying "Let’s Begin"

We apply the formula → LCM(a, b)×HCF(a, b)=a×b to check the relationship between the numbers; 


LCM of 19 and 57 = 57


HCF of 19 and 57 = 19


Now, verifying the same; 


LCM(a, b)×HCF(a, b)=a×b


57×19=19×57 


1083=1083 
 

Explanation

The above is how we ascertain and verify the relationship between the LCM and the HCF of two given numbers. 
 

Max from BrightChamps Praising Clear Math Explanations
Ray Thinking Deeply About Math Problems

FAQs on Least Common Multiple of 19 and 57

1.Are 19 and 57 prime numbers?

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2.Is 19 divisible by 57?

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3. What is the LCM of 9 and 57?

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4. Find the HCF of 19 and 57?

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5.Is 990 divisible by 2?

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6.How can children in Indonesia use numbers in everyday life to understand LCM of 19 and 57 ?

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7.What are some fun ways kids in Indonesia can practice LCM of 19 and 57 with numbers?

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8.What role do numbers and LCM of 19 and 57 play in helping children in Indonesia develop problem-solving skills?

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9.How can families in Indonesia create number-rich environments to improve LCM of 19 and 57 skills?

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Professor Greenline from BrightChamps

Important Glossaries for LCM of 19 and 57

  • Multiple: product of a number and integer  

 

  • Prime Factor: a number whose factors are itself and 1 

 

  • Prime Factorization: breaking a large number into its prime factors
Professor Greenline from BrightChamps

About BrightChamps in Indonesia

At BrightChamps, numbers are more than simple digits—they unlock countless opportunities! We are dedicated to helping children all over Indonesia grasp key math skills, focusing today on the LCM of 19 and 57 with an emphasis on understanding the LCM—in a way that’s fun, engaging, and easy to follow. Whether your child is calculating the speed of a roller coaster at Dunia Fantasi, tracking scores at badminton matches, or managing their allowance for the latest gadgets, mastering numbers gives them confidence for everyday tasks. Our interactive lessons keep learning fun and easy. Since kids in Indonesia learn in diverse ways, we tailor our approach to each child’s needs. From the lively streets of Jakarta to the beautiful beaches of Bali, BrightChamps brings math to life, making the LCM a fun part of every child’s learning journey!
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Hiralee Lalitkumar Makwana

About the Author

Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.

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Max, the Girl Character from BrightChamps

Fun Fact

: She loves to read number jokes and games.

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