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curriculum/challenges/italian/10-coding-interview-prep/project-euler/problem-60-prime-pair-sets.md

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+---
+id: 5900f3a81000cf542c50febb
+title: 'Problem 60: Prime pair sets'
+challengeType: 5
+forumTopicId: 302172
+dashedName: problem-60-prime-pair-sets
+---
+
+# --description--
+
+The primes 3, 7, 109, and 673, are quite remarkable. By taking any two primes and concatenating them in any order the result will always be prime. For example, taking 7 and 109, both 7109 and 1097 are prime. The sum of these four primes, 792, represents the lowest sum for a set of four primes with this property.
+
+Find the lowest sum for a set of five primes for which any two primes concatenate to produce another prime.
+
+# --hints--
+
+`primePairSets()` should return a number.
+
+```js
+assert(typeof primePairSets() === 'number');
+```
+
+`primePairSets()` should return 26033.
+
+```js
+assert.strictEqual(primePairSets(), 26033);
+```
+
+# --seed--
+
+## --seed-contents--
+
+```js
+function primePairSets() {
+
+  return true;
+}
+
+primePairSets();
+```
+
+# --solutions--
+
+```js
+// solution required
+```