45 lines
		
	
	
		
			780 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
		
		
			
		
	
	
			45 lines
		
	
	
		
			780 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
|   | --- | |||
|  | id: 5900f4151000cf542c50ff27 | |||
|  | title: 'Problem 168: Number Rotations' | |||
|  | challengeType: 5 | |||
|  | forumTopicId: 301802 | |||
|  | dashedName: problem-168-number-rotations | |||
|  | --- | |||
|  | 
 | |||
|  | # --description--
 | |||
|  | 
 | |||
|  | Consider the number 142857. We can right-rotate this number by moving the last digit (7) to the front of it, giving us 714285. | |||
|  | 
 | |||
|  | It can be verified that 714285=5×142857. | |||
|  | 
 | |||
|  | This demonstrates an unusual property of 142857: it is a divisor of its right-rotation. | |||
|  | 
 | |||
|  | Find the last 5 digits of the sum of all integers n, 10 < n < 10100, that have this property. | |||
|  | 
 | |||
|  | # --hints--
 | |||
|  | 
 | |||
|  | `euler168()` should return 59206. | |||
|  | 
 | |||
|  | ```js | |||
|  | assert.strictEqual(euler168(), 59206); | |||
|  | ``` | |||
|  | 
 | |||
|  | # --seed--
 | |||
|  | 
 | |||
|  | ## --seed-contents--
 | |||
|  | 
 | |||
|  | ```js | |||
|  | function euler168() { | |||
|  | 
 | |||
|  |   return true; | |||
|  | } | |||
|  | 
 | |||
|  | euler168(); | |||
|  | ``` | |||
|  | 
 | |||
|  | # --solutions--
 | |||
|  | 
 | |||
|  | ```js | |||
|  | // solution required | |||
|  | ``` |