--- id: 5900f5191000cf542c51002b challengeType: 5 title: 'Problem 428: Necklace of Circles' videoUrl: '' localeTitle: '' --- ## Description undefined ## Instructions ## Tests ```yml tests: - text: '' testString: 'assert.strictEqual(necklace(1000000000), 747215561862, "necklace(1000000000) should return 747215561862.");' ``` ## Challenge Seed ```js function necklace(n) { // Good luck! return true; } necklace(1000000000) ``` ## Solution ```js // solution required ```
necklace(1000000000)