Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 42001 and 42008 the smallest integer that is 1764378008 that is divisible by both numbers.
Least Common Multiple (LCM) of 42001 and 42008 is 1764378008.
LCM(42001,42008) = 1764378008
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 42001 and 42008. First we will calculate the prime factors of 42001 and 42008.
Prime Factorization of 42001
97 | 42001 |
433 | 433 |
1 |
Prime factors of 42001 are 97,433. Prime factorization of 42001 in exponential form is:
42001 = 971×4331
Prime Factorization of 42008
2 | 42008 |
2 | 21004 |
2 | 10502 |
59 | 5251 |
89 | 89 |
1 |
Prime factors of 42008 are 2, 59,89. Prime factorization of 42008 in exponential form is:
42008 = 23×591×891
Now multiplying the highest exponent prime factors to calculate the LCM of 42001 and 42008.
LCM(42001,42008) = 23×591×891×971×4331
LCM(42001,42008) = 1764378008
Factors of 42001
List of positive integer factors of 42001 that divides 42001 without a remainder.
1, 97, 433, 42001
Factors of 42008
List of positive integer factors of 42008 that divides 42008 without a remainder.
1, 2, 4, 8, 59, 89, 118, 178, 236, 356, 472, 712, 5251, 10502, 21004, 42008
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42001 and 42008, than apply into the LCM equation.
GCF(42001,42008) = 1
LCM(42001,42008) = ( 42001 × 42008) / 1
LCM(42001,42008) = 1764378008 / 1
LCM(42001,42008) = 1764378008
(i) The LCM of 42008 and 42001 is associative
LCM of 42001 and 42008 = LCM of 42008 and 42001
1. What is the LCM of 42001 and 42008?
Answer: LCM of 42001 and 42008 is 1764378008.
2. What are the Factors of 42001?
Answer: Factors of 42001 are 1, 97, 433, 42001. There are 4 integers that are factors of 42001. The greatest factor of 42001 is 42001.
3. What are the Factors of 42008?
Answer: Factors of 42008 are 1, 2, 4, 8, 59, 89, 118, 178, 236, 356, 472, 712, 5251, 10502, 21004, 42008. There are 16 integers that are factors of 42008. The greatest factor of 42008 is 42008.
4. How to Find the LCM of 42001 and 42008?
Answer:
Least Common Multiple of 42001 and 42008 = 1764378008
Step 1: Find the prime factorization of 42001
42001 = 97 x 433
Step 2: Find the prime factorization of 42008
42008 = 2 x 2 x 2 x 59 x 89
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1764378008 = 2 x 2 x 2 x 59 x 89 x 97 x 433
Step 4: Therefore, the least common multiple of 42001 and 42008 is 1764378008.