Euler totient

Code snippets

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

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

$ch = curl_init("https://api.oanor.com/modular-api/v1/totient");
curl_setopt($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/totient",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "note": "Euler's totient φ(n) counts the integers in 1..n coprime to n. For gcd(a,n)=1, a^φ(n) ≡ 1 (mod n) (Euler's theorem).",
        "inputs": {
            "n": "36"
        },
        "totient": "12",
        "euler_check": {
            "a": "5",
            "coprime": true,
            "a_pow_phi_mod_n": "1"
        },
        "prime_factorization": [
            {
                "prime": "2",
                "exponent": 2
            },
            {
                "prime": "3",
                "exponent": 2
            }
        ]
    },
    "meta": {
        "timestamp": "2026-06-04T18:38:00.695Z",
        "request_id": "9390e275-8e49-4442-b060-1ebaceefb5dc"
    },
    "status": "ok",
    "message": "Euler totient",
    "success": true
}