Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3939 and 3945 the smallest integer that is 5179785 that is divisible by both numbers.
Least Common Multiple (LCM) of 3939 and 3945 is 5179785.
LCM(3939,3945) = 5179785
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 3939 and 3945. First we will calculate the prime factors of 3939 and 3945.
Prime Factorization of 3939
3 | 3939 |
13 | 1313 |
101 | 101 |
1 |
Prime factors of 3939 are 3, 13,101. Prime factorization of 3939 in exponential form is:
3939 = 31×131×1011
Prime Factorization of 3945
3 | 3945 |
5 | 1315 |
263 | 263 |
1 |
Prime factors of 3945 are 3, 5,263. Prime factorization of 3945 in exponential form is:
3945 = 31×51×2631
Now multiplying the highest exponent prime factors to calculate the LCM of 3939 and 3945.
LCM(3939,3945) = 31×51×131×1011×2631
LCM(3939,3945) = 5179785
Factors of 3939
List of positive integer factors of 3939 that divides 3939 without a remainder.
1, 3, 13, 39, 101, 303, 1313, 3939
Factors of 3945
List of positive integer factors of 3945 that divides 3945 without a remainder.
1, 3, 5, 15, 263, 789, 1315, 3945
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3939 and 3945, than apply into the LCM equation.
GCF(3939,3945) = 3
LCM(3939,3945) = ( 3939 × 3945) / 3
LCM(3939,3945) = 15539355 / 3
LCM(3939,3945) = 5179785
(i) The LCM of 3945 and 3939 is associative
LCM of 3939 and 3945 = LCM of 3945 and 3939
1. What is the LCM of 3939 and 3945?
Answer: LCM of 3939 and 3945 is 5179785.
2. What are the Factors of 3939?
Answer: Factors of 3939 are 1, 3, 13, 39, 101, 303, 1313, 3939. There are 8 integers that are factors of 3939. The greatest factor of 3939 is 3939.
3. What are the Factors of 3945?
Answer: Factors of 3945 are 1, 3, 5, 15, 263, 789, 1315, 3945. There are 8 integers that are factors of 3945. The greatest factor of 3945 is 3945.
4. How to Find the LCM of 3939 and 3945?
Answer:
Least Common Multiple of 3939 and 3945 = 5179785
Step 1: Find the prime factorization of 3939
3939 = 3 x 13 x 101
Step 2: Find the prime factorization of 3945
3945 = 3 x 5 x 263
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 5179785 = 3 x 5 x 13 x 101 x 263
Step 4: Therefore, the least common multiple of 3939 and 3945 is 5179785.