Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1965 and 1967 the smallest integer that is 3865155 that is divisible by both numbers.
Least Common Multiple (LCM) of 1965 and 1967 is 3865155.
LCM(1965,1967) = 3865155
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 1965 and 1967. First we will calculate the prime factors of 1965 and 1967.
Prime Factorization of 1965
3 | 1965 |
5 | 655 |
131 | 131 |
1 |
Prime factors of 1965 are 3, 5,131. Prime factorization of 1965 in exponential form is:
1965 = 31×51×1311
Prime Factorization of 1967
7 | 1967 |
281 | 281 |
1 |
Prime factors of 1967 are 7,281. Prime factorization of 1967 in exponential form is:
1967 = 71×2811
Now multiplying the highest exponent prime factors to calculate the LCM of 1965 and 1967.
LCM(1965,1967) = 31×51×71×1311×2811
LCM(1965,1967) = 3865155
Factors of 1965
List of positive integer factors of 1965 that divides 1965 without a remainder.
1, 3, 5, 15, 131, 393, 655, 1965
Factors of 1967
List of positive integer factors of 1967 that divides 1967 without a remainder.
1, 7, 281, 1967
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1965 and 1967, than apply into the LCM equation.
GCF(1965,1967) = 1
LCM(1965,1967) = ( 1965 × 1967) / 1
LCM(1965,1967) = 3865155 / 1
LCM(1965,1967) = 3865155
(i) The LCM of 1967 and 1965 is associative
LCM of 1965 and 1967 = LCM of 1967 and 1965
1. What is the LCM of 1965 and 1967?
Answer: LCM of 1965 and 1967 is 3865155.
2. What are the Factors of 1965?
Answer: Factors of 1965 are 1, 3, 5, 15, 131, 393, 655, 1965. There are 8 integers that are factors of 1965. The greatest factor of 1965 is 1965.
3. What are the Factors of 1967?
Answer: Factors of 1967 are 1, 7, 281, 1967. There are 4 integers that are factors of 1967. The greatest factor of 1967 is 1967.
4. How to Find the LCM of 1965 and 1967?
Answer:
Least Common Multiple of 1965 and 1967 = 3865155
Step 1: Find the prime factorization of 1965
1965 = 3 x 5 x 131
Step 2: Find the prime factorization of 1967
1967 = 7 x 281
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3865155 = 3 x 5 x 7 x 131 x 281
Step 4: Therefore, the least common multiple of 1965 and 1967 is 3865155.