Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1973 and 1975 the smallest integer that is 3896675 that is divisible by both numbers.
Least Common Multiple (LCM) of 1973 and 1975 is 3896675.
LCM(1973,1975) = 3896675
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 1973 and 1975. First we will calculate the prime factors of 1973 and 1975.
Prime Factorization of 1973
1973 | 1973 |
1 |
Prime factors of 1973 are 1973. Prime factorization of 1973 in exponential form is:
1973 = 19731
Prime Factorization of 1975
5 | 1975 |
5 | 395 |
79 | 79 |
1 |
Prime factors of 1975 are 5,79. Prime factorization of 1975 in exponential form is:
1975 = 52×791
Now multiplying the highest exponent prime factors to calculate the LCM of 1973 and 1975.
LCM(1973,1975) = 52×791×19731
LCM(1973,1975) = 3896675
Factors of 1973
List of positive integer factors of 1973 that divides 1973 without a remainder.
1, 1973
Factors of 1975
List of positive integer factors of 1975 that divides 1975 without a remainder.
1, 5, 25, 79, 395, 1975
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1973 and 1975, than apply into the LCM equation.
GCF(1973,1975) = 1
LCM(1973,1975) = ( 1973 × 1975) / 1
LCM(1973,1975) = 3896675 / 1
LCM(1973,1975) = 3896675
(i) The LCM of 1975 and 1973 is associative
LCM of 1973 and 1975 = LCM of 1975 and 1973
1. What is the LCM of 1973 and 1975?
Answer: LCM of 1973 and 1975 is 3896675.
2. What are the Factors of 1973?
Answer: Factors of 1973 are 1, 1973. There are 2 integers that are factors of 1973. The greatest factor of 1973 is 1973.
3. What are the Factors of 1975?
Answer: Factors of 1975 are 1, 5, 25, 79, 395, 1975. There are 6 integers that are factors of 1975. The greatest factor of 1975 is 1975.
4. How to Find the LCM of 1973 and 1975?
Answer:
Least Common Multiple of 1973 and 1975 = 3896675
Step 1: Find the prime factorization of 1973
1973 = 1973
Step 2: Find the prime factorization of 1975
1975 = 5 x 5 x 79
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3896675 = 5 x 5 x 79 x 1973
Step 4: Therefore, the least common multiple of 1973 and 1975 is 3896675.