Least Common Multiple of 1603 and 1605

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Free LCM Calculator determines the least common multiple (LCM) between 1603 and 1605 the smallest integer that is 2572815 that is divisible by both numbers.

Least Common Multiple (LCM) of 1603 and 1605 is 2572815.

LCM(1603,1605) = 2572815

LCM of 1603 and 1605

Least common multiple or lowest common denominator (LCD) can be calculated in three ways;

LCM of:
and

Least Common Multiple of 1603 and 1605

LCM of 1603 and 1605 is 2572815

Least common multiple can be found by multiplying the highest exponent prime factors of 1603 and 1605. First we will calculate the prime factors of 1603 and 1605.

Prime Factorization of 1603


7 1603
229 229
1

Prime factors of 1603 are 7,229. Prime factorization of 1603 in exponential form is:

1603 = 71×2291

Prime Factorization of 1605


3 1605
5 535
107 107
1

Prime factors of 1605 are 3, 5,107. Prime factorization of 1605 in exponential form is:

1605 = 31×51×1071

Now multiplying the highest exponent prime factors to calculate the LCM of 1603 and 1605.

LCM(1603,1605) = 31×51×71×1071×2291
LCM(1603,1605) = 2572815

Factors of 1603

List of positive integer factors of 1603 that divides 1603 without a remainder.

1, 7, 229, 1603

Factors of 1605

List of positive integer factors of 1605 that divides 1605 without a remainder.

1, 3, 5, 15, 107, 321, 535, 1605

Least Common Multiple of 1603 and 1605 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1603 and 1605, than apply into the LCM equation.

GCF(1603,1605) = 1
LCM(1603,1605) = ( 1603 × 1605) / 1
LCM(1603,1605) = 2572815 / 1
LCM(1603,1605) = 2572815

Properties of LCM 1603 and 1605

(i) The LCM of 1605 and 1603 is associative

LCM of 1603 and 1605 = LCM of 1605 and 1603

Related Least Common Multiples of 1603

Related Least Common Multiples of 1605

Frequently Asked Questions on LCM of 1603 and 1605

1. What is the LCM of 1603 and 1605?

Answer: LCM of 1603 and 1605 is 2572815.

2. What are the Factors of 1603?

Answer: Factors of 1603 are 1, 7, 229, 1603. There are 4 integers that are factors of 1603. The greatest factor of 1603 is 1603.

3. What are the Factors of 1605?

Answer: Factors of 1605 are 1, 3, 5, 15, 107, 321, 535, 1605. There are 8 integers that are factors of 1605. The greatest factor of 1605 is 1605.

4. How to Find the LCM of 1603 and 1605?

Answer:

Least Common Multiple of 1603 and 1605 = 2572815

Step 1: Find the prime factorization of 1603

1603 = 7 x 229

Step 2: Find the prime factorization of 1605

1605 = 3 x 5 x 107

Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 2572815 = 3 x 5 x 7 x 107 x 229

Step 4: Therefore, the least common multiple of 1603 and 1605 is 2572815.