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# How do you find the LCM of 2 numbers if one number is prime?

Updated: 12/11/2022

Cellist2010

Lvl 1
11y ago

If the second number is a multiple of the Prime number, than the LCM is the second number. If the second number is not a multiple of the prime number, then the two numbers are relatively prime, and the LCM is the product of the two numbers.

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Q: How do you find the LCM of 2 numbers if one number is prime?
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### Can you find the LCM of a prime number?

No. You can only find the LCM of at least two numbers, prime or otherwise. The LCM of any two prime numbers is their product.

### How do you find the least common multiple that are prime?

The LCM of a set of prime numbers is their product.

### How you can find LCM of the given number?

Firstly, the LCM f a single number is the number itself.The LCM of many numbers is found by dividing the numbers with the smallest prime numbers until the numbers are completely divided and the remainder is zero.Then all the prime numbers used for dividing is multiplied and the LCM is found.

### How do you find the LCM of 10 and 11?

The LCM of two numbers is the product of the numbers if one of the numbers is a prime. Since 11 is a prime, the LCM of 10 and 11 is 110 (10 x 11). If neither number had been a prime, the LCM would have been the product of all the prime factors of the numbers to their greatest power.

### How do you find the LCM of a composite number?

You need at least two numbers to find an LCM. It doesn't matter whether they are prime or composite.

### How do you find the lcm of three numbers when all of them are prime?

When all of them are prime numbers,then just multiply the numbers to get the LCM of those 3 numbers.

### What type of numbers can you multiply to always find the LCM?

prime numbers, co-prime numbers

### Least common multiple for 7 and 17?

7 and 17 are both primes numbers. The means that to find the LCM we need multiply them. The LCM of 7 and 17 is 7x17 which is 119. If two numbers are prime, then they are also relatively prime and in general the way to find the LCM of relatively prime number is to multiply them together.

### How can prime numbers be used in your everyday life?

Prime numbers are used to find the LCM of numbers Prime numbers are used to find the HCF of numbers Prime numbers are used to simplify fractions Prime numbers are used to find the LCD of fractions

### Can you find the least common multiple in prime number?

The least common multiple (LCM) refers to a multiple that is COMMON to two or more numbers. If you have only one number - whether or not it is a prime - you cannot have a least COMMON multiple.

### What is the least common multiple of 378?

You need at least two numbers to find an LCM. If that's 3 and 78, the LCM is 78.