Data update

Task/Factorions/JavaScript/factorions.js

@@ -0,0 +1,25 @@
+function factorial(n) {
+  if (n <= 1) {
+    return 1;
+  }
+  let a = [...Array(n + 1).keys()];
+  a.shift();
+  return a.reduce((x, y) => x * y);
+}
+
+function fact_digsum(n, b) {
+  if (n > b - 1) {
+    return factorial(n % b) + fact_digsum(Math.floor(n / b), b);
+  }
+  return factorial(n);
+}
+
+for (let i = 9; i <= 12; i++) {
+  console.log(`Factorions in base ${i}:`);
+  for (let j = 1; j < 1499999; j++) {
+    if (j == fact_digsum(j, i)) {
+      console.log(j);
+    }
+  }
+  console.log();
+}