FACTDOUBLE function

Returns the double factorial of a number.

Syntax

FACTDOUBLE(number)

Number     is the value for which to return the double factorial. If number is not an integer, it is truncated.

Remarks

  • If number is nonnumeric, FACTDOUBLE returns the #VALUE! error value.

  • If number is negative, FACTDOUBLE returns the #NUM! error value.

  • If number is even:

    Equation

  • If number is odd:

    Equation

Example

The example may be easier to understand if you copy it to a blank worksheet.

How to copy an example

  1. Create a blank workbook or worksheet.

  2. Select the example in the Help topic.

    Note   Do not select the row or column headers.

    Selecting an example from Help

    Selecting an example from Help

  3. Press CTRL+C.

  4. In the worksheet, select cell A1, and press CTRL+V.

  5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

1

2

3

A

B

Formula

Description (Result)

=FACTDOUBLE(6)

Double factorial of 6 (48)

=FACTDOUBLE(7)

Double factorial of 7 (105)

Applies To: Excel 2007



Was this information helpful?

Yes No

How can we improve it?

255 characters remaining

To protect your privacy, please do not include contact information in your feedback. Review our privacy policy.

Thank you for your feedback!

Support resources

Change language