Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 4945 and 4947 the smallest integer that is 24462915 that is divisible by both numbers.
Least Common Multiple (LCM) of 4945 and 4947 is 24462915.
LCM(4945,4947) = 24462915
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 4945 and 4947. First we will calculate the prime factors of 4945 and 4947.
Prime Factorization of 4945
5 | 4945 |
23 | 989 |
43 | 43 |
1 |
Prime factors of 4945 are 5, 23,43. Prime factorization of 4945 in exponential form is:
4945 = 51×231×431
Prime Factorization of 4947
3 | 4947 |
17 | 1649 |
97 | 97 |
1 |
Prime factors of 4947 are 3, 17,97. Prime factorization of 4947 in exponential form is:
4947 = 31×171×971
Now multiplying the highest exponent prime factors to calculate the LCM of 4945 and 4947.
LCM(4945,4947) = 31×51×171×231×431×971
LCM(4945,4947) = 24462915
Factors of 4945
List of positive integer factors of 4945 that divides 4945 without a remainder.
1, 5, 23, 43, 115, 215, 989, 4945
Factors of 4947
List of positive integer factors of 4947 that divides 4947 without a remainder.
1, 3, 17, 51, 97, 291, 1649, 4947
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4945 and 4947, than apply into the LCM equation.
GCF(4945,4947) = 1
LCM(4945,4947) = ( 4945 × 4947) / 1
LCM(4945,4947) = 24462915 / 1
LCM(4945,4947) = 24462915
(i) The LCM of 4947 and 4945 is associative
LCM of 4945 and 4947 = LCM of 4947 and 4945
1. What is the LCM of 4945 and 4947?
Answer: LCM of 4945 and 4947 is 24462915.
2. What are the Factors of 4945?
Answer: Factors of 4945 are 1, 5, 23, 43, 115, 215, 989, 4945. There are 8 integers that are factors of 4945. The greatest factor of 4945 is 4945.
3. What are the Factors of 4947?
Answer: Factors of 4947 are 1, 3, 17, 51, 97, 291, 1649, 4947. There are 8 integers that are factors of 4947. The greatest factor of 4947 is 4947.
4. How to Find the LCM of 4945 and 4947?
Answer:
Least Common Multiple of 4945 and 4947 = 24462915
Step 1: Find the prime factorization of 4945
4945 = 5 x 23 x 43
Step 2: Find the prime factorization of 4947
4947 = 3 x 17 x 97
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 24462915 = 3 x 5 x 17 x 23 x 43 x 97
Step 4: Therefore, the least common multiple of 4945 and 4947 is 24462915.