Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 978 and 979 the smallest integer that is 957462 that is divisible by both numbers.
Least Common Multiple (LCM) of 978 and 979 is 957462.
LCM(978,979) = 957462
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 978 and 979. First we will calculate the prime factors of 978 and 979.
Prime Factorization of 978
2 | 978 |
3 | 489 |
163 | 163 |
1 |
Prime factors of 978 are 2, 3,163. Prime factorization of 978 in exponential form is:
978 = 21×31×1631
Prime Factorization of 979
11 | 979 |
89 | 89 |
1 |
Prime factors of 979 are 11,89. Prime factorization of 979 in exponential form is:
979 = 111×891
Now multiplying the highest exponent prime factors to calculate the LCM of 978 and 979.
LCM(978,979) = 21×31×111×891×1631
LCM(978,979) = 957462
Factors of 978
List of positive integer factors of 978 that divides 978 without a remainder.
1, 2, 3, 6, 163, 326, 489, 978
Factors of 979
List of positive integer factors of 979 that divides 979 without a remainder.
1, 11, 89, 979
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 978 and 979, than apply into the LCM equation.
GCF(978,979) = 1
LCM(978,979) = ( 978 × 979) / 1
LCM(978,979) = 957462 / 1
LCM(978,979) = 957462
(i) The LCM of 979 and 978 is associative
LCM of 978 and 979 = LCM of 979 and 978
1. What is the LCM of 978 and 979?
Answer: LCM of 978 and 979 is 957462.
2. What are the Factors of 978?
Answer: Factors of 978 are 1, 2, 3, 6, 163, 326, 489, 978. There are 8 integers that are factors of 978. The greatest factor of 978 is 978.
3. What are the Factors of 979?
Answer: Factors of 979 are 1, 11, 89, 979. There are 4 integers that are factors of 979. The greatest factor of 979 is 979.
4. How to Find the LCM of 978 and 979?
Answer:
Least Common Multiple of 978 and 979 = 957462
Step 1: Find the prime factorization of 978
978 = 2 x 3 x 163
Step 2: Find the prime factorization of 979
979 = 11 x 89
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 957462 = 2 x 3 x 11 x 89 x 163
Step 4: Therefore, the least common multiple of 978 and 979 is 957462.