Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1658 and 1661 the smallest integer that is 2753938 that is divisible by both numbers.
Least Common Multiple (LCM) of 1658 and 1661 is 2753938.
LCM(1658,1661) = 2753938
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 1658 and 1661. First we will calculate the prime factors of 1658 and 1661.
Prime Factorization of 1658
2 | 1658 |
829 | 829 |
1 |
Prime factors of 1658 are 2,829. Prime factorization of 1658 in exponential form is:
1658 = 21×8291
Prime Factorization of 1661
11 | 1661 |
151 | 151 |
1 |
Prime factors of 1661 are 11,151. Prime factorization of 1661 in exponential form is:
1661 = 111×1511
Now multiplying the highest exponent prime factors to calculate the LCM of 1658 and 1661.
LCM(1658,1661) = 21×111×1511×8291
LCM(1658,1661) = 2753938
Factors of 1658
List of positive integer factors of 1658 that divides 1658 without a remainder.
1, 2, 829, 1658
Factors of 1661
List of positive integer factors of 1661 that divides 1661 without a remainder.
1, 11, 151, 1661
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1658 and 1661, than apply into the LCM equation.
GCF(1658,1661) = 1
LCM(1658,1661) = ( 1658 × 1661) / 1
LCM(1658,1661) = 2753938 / 1
LCM(1658,1661) = 2753938
(i) The LCM of 1661 and 1658 is associative
LCM of 1658 and 1661 = LCM of 1661 and 1658
1. What is the LCM of 1658 and 1661?
Answer: LCM of 1658 and 1661 is 2753938.
2. What are the Factors of 1658?
Answer: Factors of 1658 are 1, 2, 829, 1658. There are 4 integers that are factors of 1658. The greatest factor of 1658 is 1658.
3. What are the Factors of 1661?
Answer: Factors of 1661 are 1, 11, 151, 1661. There are 4 integers that are factors of 1661. The greatest factor of 1661 is 1661.
4. How to Find the LCM of 1658 and 1661?
Answer:
Least Common Multiple of 1658 and 1661 = 2753938
Step 1: Find the prime factorization of 1658
1658 = 2 x 829
Step 2: Find the prime factorization of 1661
1661 = 11 x 151
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2753938 = 2 x 11 x 151 x 829
Step 4: Therefore, the least common multiple of 1658 and 1661 is 2753938.