Modular inverse

Code snippets

curl "https://api.oanor.com/modular-api/v1/inverse" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/modular-api/v1/inverse", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/modular-api/v1/inverse");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/modular-api/v1/inverse",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "gcd": "1",
        "note": "Modular multiplicative inverse a⁻¹ mod m via the extended Euclidean algorithm.",
        "check": "3 × 4 ≡ 1 (mod 11)",
        "inputs": {
            "a": "3",
            "modulus": "11"
        },
        "inverse": "4",
        "invertible": true
    },
    "meta": {
        "timestamp": "2026-06-04T18:38:00.480Z",
        "request_id": "a4c03f21-ffcb-4b40-92bc-1d68d3a0e8ad"
    },
    "status": "ok",
    "message": "Modular inverse",
    "success": true
}