The factorial calculator

The factorial calculator works out the factorial of a whole number. Type a number, press Calculate, read the answer. That is the whole product.

What we would like from you

This app has faults in it. Your job is to find them and tell us about them.

• Work across the whole site, not only the form.
• Say what you expected before you say what happened.
• Tell us what works too, not only what is broken.
• Judge how much each fault matters to somebody using the app.

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