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Sindri Primality Test (Miller-Rabin)
x402
Sindri Primality Test (Miller-Rabin) is a paid API for AI agents from x402.outpimp.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Tests whether a given non-negative integer is prime using a deterministically correct Miller-Rabin algorithm, covering all integers up to 2^53-1 (JavaScript safe integer range).
Price / call$0.01
Success—
StatusUnknown
How this service works
Deterministic primality test using the Miller-Rabin algorithm with a witness set proven deterministic for all integers below 3.3x10^24, safely covering the full JavaScript safe-integer range.
Output
Returns a JSON response indicating whether the submitted integer is prime (true/false), computed deterministically using the Miller-Rabin algorithm with a proven witness set — no probabilistic false positives for any value up to 2^53-1.
Example use cases
Cryptographic key candidate screening
“I need to check whether 9007199254740881 is a prime number before using it in a key generation routine — can you verify it's prime?”
Math homework prime verification
“My student worksheet says 104729 is prime — can you confirm that's actually true?”
Competitive programming integer check
“For my algorithm challenge, I need to know if 15485863 is a prime number right now.”
Technical details
Endpoint
POSThttps://x402.outpimp.com/isPrimeWhen to prefer
Choose this endpoint when you need a fast, deterministic, guaranteed-correct primality answer for any integer within JavaScript's safe integer range (up to ~9 quadrillion). Unlike probabilistic primality tests, this uses a fixed witness set proven to be deterministic below 3.3×10^24, making it suitable for cryptographic screening, competitive programming, or anywhere false positives are unacceptable. Prefer this over rolling your own Miller-Rabin or using probabilistic tests when correctness matters.
Side effects
- Input n is outside the valid range [0, 2^53-1] — returns an error or undefined behavior
- Input n is not an integer (e.g. a float) — may be rejected or rounded
- Missing required field 'n' — returns a validation error
- Network or payment failure (x402 protocol) — call does not complete
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| n | number | Non-negative integer to test (0 to 2^53 - 1). |
Tags
x402
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