LCM for 320 and 640

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Least Common Multiple of
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What's the Least Common Multiple (LCM) of 320 and 640?

Answer

LCM of 320 and 640 is
640

(Six hundred forty)

Finding LCM for 320 and 640 using GCF of these numbers

The first method to find LCM for numbers 320 and 640 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 320 and 640 is 320, so

LCM = (320 × 640) ÷ 320

LCM = 204,800 ÷ 320

LCM = 640

Finding LCM for 320 and 640 by Listing Multiples

The second method to find LCM for numbers 320 and 640 is to list out the common multiples for both numbers and pick the first one that matches:

Multiples of 320: 320, 640, 960, 1,280

Multiples of 640: 640, 1,280, 1,920

So the LCM for 320 and 640 is 640

Finding LCM for 320 and 640 by Prime Factorization

Another method to find LCM for numbers 320 and 640 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 320: 2, 2, 2, 2, 2, 2, 5 (exponent form: 26, 51)

All Prime Factors of 640: 2, 2, 2, 2, 2, 2, 2, 5 (exponent form: 27, 51)

27 × 51 = 640

See Also

About "Least Common Multiple" Calculator

This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 320 and 640? (The answer is: 640). Select the first number (e.g. '320') and the second number (e.g. '640'). After that hit the 'Calculate' button.
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers
"Least Common Multiple" Calculator
Least Common Multiple of
and

LCM Table

Number 1Number 2LCM
32062540,000
320626100,160
320627200,640
32062850,240
320629201,280
32063020,160
320631201,920
32063225,280
320633202,560
320634101,440
32063540,640
32063650,880
320637203,840
320638102,080
320639204,480
320640640
320641205,120
320642102,720
320643205,760
32064451,520
32064541,280
320646103,360
320647207,040
32064825,920
320649207,680
32065020,800
320651208,320
32065252,160
320653208,960
320654104,640

FAQ

What's the Least Common Multiple (LCM) of 320 and 640?

LCM of 320 and 640 is 640

How to find the LCM of 320 and 640 using prime factorization?

To find the LCM of 320 and 640, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 640.

What is the difference between LCM and GCF?

LCM (Least Common Multiple) is the smallest number divisible by both numbers, while GCF (Greatest Common Factor) is the largest number that divides both. For 320 and 640: LCM = 640, GCF = 320.

See Also