Math & Algebra Tool
Multifactorial Calculator
Calculate Double Factorial (n!!), Triple (n!!!), and higher order factorials.
10!!
Calculation:
10 × 8 × 6 × 4 × 2
Result
3840
Σ The Formula
n!k = n × (n-k) × (n-2k)...
Real World Examples
Double Factorial (n!!)
10!! = 10 × 8 × 6 × 4 × 2 = 3840.
Triple Factorial (n!!!)
10!!! = 10 × 7 × 4 × 1 = 280.
# About This Calculator
A Multifactorial (denoted n!, n!!, n!!!...) is a product of integers descending by a specific step size k.
For example, a double factorial (step 2) multiplies every other number. Note: n!! is NOT (n!)!.
Frequently Asked Questions
Is Multifactorial Calculator free to use?+
Yes, Multifactorial Calculator on Matheric is completely free to use. We believe in accessible education and utility for everyone.
How accurate is Multifactorial Calculator?+
We use standard mathematical formulas and high-precision computing algorithms to ensure results for Multifactorial Calculator are accurate for academic and professional use.
Can I use Multifactorial Calculator on my phone?+
Yes! Multifactorial Calculator is fully responsive and optimized for all devices, including smartphones, tablets, and desktops.
Do you save my data?+
No. We prioritize your privacy. All calculations are performed in your browser or temporarily processed, and we do not store your personal input data.
How do I report a bug?+
If you notice any issues with Multifactorial Calculator or have suggestions for improvement, please contact us via the link in the footer. We value your feedback!
Can I request a new feature?+
Absolutely. We are constantly expanding our toolset. Feel free to reach out with your requests, and we might build it next!
About
A Multifactorial (denoted n!, n!!, n!!!...) is a product of integers descending by a specific step size k.
For example, a double factorial (step 2) multiplies every other number. Note: n!! is NOT (n!)!.