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# Greatest Common Factor Calculator: Tool to Find GCF of Numbers

Calculator Preferences
Greatest Common Factor Calculator

This math calculator will help you to quickly find the GCF for 2, 3, or 4 numbers at once -- all in the blink of an eye -- plus show the GFC divisors and all factors for all numbers entered. The Learn tab includes:

• What are factors?
• What are common factors?
• What is a greatest common factor?

#### Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None
1st #:1st number:First number:First number:

#### 1st number:

Enter the first of the numbers to find the greatest common factor for. Number entered should be an integer greater than zero.

 First number
2nd #:2nd number:Second number:Second number:

#### 2nd number:

Enter the second of the numbers to find the greatest common factor for. Number entered should be an integer greater than zero.

 Second number
Opt 3rd #:Optional 3rd #:Optional third number:Optional third number:

#### Optional 3rd number:

Enter the optional 3rd of the numbers to find the greatest common factor for. In order to include the 3rd number, the 1st and 2nd numbers are required. Number entered should be an integer greater than zero.

 Optional third number
Opt 4th #:Optional 4th #:Optional fourth number:Optional fourth number:

#### Optional 4th number:

Enter the optional 4th of the numbers to find the greatest common factor for. In order to include the 4th number, the 1st, 2nd, and 3rd numbers are required. Number entered should be an integer greater than zero.

 Optional fourth number
GCF:GCF:Greatest common factor:Greatest common factor:

#### Greatest common factor:

This is the greatest common factor for the numbers you entered. If the result is one, it means that your entries do not have any factors in common other than one -- meaning no reduction or simplification is possible.

If you would like to save the current entries to the secure database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

Feedback AppreciatedFeedback Greatly AppreciatedYour Feedback Would Be Greatly AppreciatedYour Feedback Is Greatly Appreciated

Tip

Help and Tools

#### Help and Tools:

This section, which you can Unstick or Hide in the Calculator Preferences (just above the top of the calculator), contains the following tabs (content too long to fit within bordered frame can be scrolled up and down):

About: Click this tab for an introduction to the calculator.

Instructions: Click this tab for step-by-step instructions for using the calculator.

Terms: Click this tab for a list of the descriptions that are located within each popup help button (info icons).

PCalc: Click this tab for a handy "pocket" calculator you can use when you need to calculate an entry needed for the calculator.

Data: Click this tab to save a set of entries or a note in between visits. Entries and notes will be stored to your web browser's local storage (if supported by your browser of choice), meaning they can only be recalled with the same device and web browser you were using when you saved them. If you'd like to save entries and notes between devices you can do so by subscribing to the Ad-Free Member Version.

#### Favorites

Move the slider to left and right to adjust the calculator width. Note that the Help and Tools panel will be hidden when the calculator is too wide to fit both on the screen. Moving the slider to the left will bring the instructions and tools panel back into view.

Also note that some calculators will reformat to accommodate the screen size as you make the calculator wider or narrower. If the calculator is narrow, columns of entry rows will be converted to a vertical entry form, whereas a wider calculator will display columns of entry rows, and the entry fields will be smaller in size ... since they will not need to be "thumb friendly".