Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3956 and 3961 the smallest integer that is 15669716 that is divisible by both numbers.
Least Common Multiple (LCM) of 3956 and 3961 is 15669716.
LCM(3956,3961) = 15669716
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 3956 and 3961. First we will calculate the prime factors of 3956 and 3961.
Prime Factorization of 3956
2 | 3956 |
2 | 1978 |
23 | 989 |
43 | 43 |
1 |
Prime factors of 3956 are 2, 23,43. Prime factorization of 3956 in exponential form is:
3956 = 22×231×431
Prime Factorization of 3961
17 | 3961 |
233 | 233 |
1 |
Prime factors of 3961 are 17,233. Prime factorization of 3961 in exponential form is:
3961 = 171×2331
Now multiplying the highest exponent prime factors to calculate the LCM of 3956 and 3961.
LCM(3956,3961) = 22×171×231×431×2331
LCM(3956,3961) = 15669716
Factors of 3956
List of positive integer factors of 3956 that divides 3956 without a remainder.
1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956
Factors of 3961
List of positive integer factors of 3961 that divides 3961 without a remainder.
1, 17, 233, 3961
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3956 and 3961, than apply into the LCM equation.
GCF(3956,3961) = 1
LCM(3956,3961) = ( 3956 × 3961) / 1
LCM(3956,3961) = 15669716 / 1
LCM(3956,3961) = 15669716
(i) The LCM of 3961 and 3956 is associative
LCM of 3956 and 3961 = LCM of 3961 and 3956
1. What is the LCM of 3956 and 3961?
Answer: LCM of 3956 and 3961 is 15669716.
2. What are the Factors of 3956?
Answer: Factors of 3956 are 1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956. There are 12 integers that are factors of 3956. The greatest factor of 3956 is 3956.
3. What are the Factors of 3961?
Answer: Factors of 3961 are 1, 17, 233, 3961. There are 4 integers that are factors of 3961. The greatest factor of 3961 is 3961.
4. How to Find the LCM of 3956 and 3961?
Answer:
Least Common Multiple of 3956 and 3961 = 15669716
Step 1: Find the prime factorization of 3956
3956 = 2 x 2 x 23 x 43
Step 2: Find the prime factorization of 3961
3961 = 17 x 233
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15669716 = 2 x 2 x 17 x 23 x 43 x 233
Step 4: Therefore, the least common multiple of 3956 and 3961 is 15669716.