Computes factorial (n!) for non-negative integers via GET /v1/math/factorial. Essential for combinatorics, probability calculations, and mathematical modeling in AI applications. Returns precise results for inputs up to implementation limits, avoiding floating-point approximation errors that plague manual calculations.
curl "https://tinyfn.io/v1/math/factorial" \
-H "X-API-Key: YOUR_API_KEY"const response = await fetch('https://tinyfn.io/v1/math/factorial', {
headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);import requests
response = requests.get('https://tinyfn.io/v1/math/factorial',
headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's math tools:
{
"mcpServers": {
"tinyfn-math": {
"url": "https://tinyfn.io/mcp/math",
"headers": {
"X-API-Key": "YOUR_API_KEY"
}
}
}
}Implementation-dependent but typically handles values well beyond what's practical for most applications. Large factorials grow extremely rapidly — 20! is already over 2 quintillion.
Call the factorial tool with your integer input. The MCP integration handles the REST API call automatically and returns the precise mathematical result.
No, factorial is only defined for non-negative integers (0, 1, 2, 3...). For gamma function calculations with real numbers, use a different mathematical tool.
This provides deterministic, tested results without implementing the algorithm yourself. Especially useful in AI workflows where you need reliable mathematical computation.
Yes, factorial is the foundation for permutations (nPr = n!/(n-r)!) and combinations (nCr = n!/(r!(n-r)!)). Use this as a building block for more complex combinatorial math.