47 lines
		
	
	
		
			920 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
		
		
			
		
	
	
			47 lines
		
	
	
		
			920 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
|   | --- | ||
|  | id: 5900f4381000cf542c50ff4b | ||
|  | title: 'Problem 204: Generalised Hamming Numbers' | ||
|  | challengeType: 5 | ||
|  | forumTopicId: 301845 | ||
|  | dashedName: problem-204-generalised-hamming-numbers | ||
|  | --- | ||
|  | 
 | ||
|  | # --description--
 | ||
|  | 
 | ||
|  | A Hamming number is a positive number which has no prime factor larger than 5. | ||
|  | 
 | ||
|  | So the first few Hamming numbers are 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15. | ||
|  | 
 | ||
|  | There are 1105 Hamming numbers not exceeding 108. | ||
|  | 
 | ||
|  | We will call a positive number a generalised Hamming number of type n, if it has no prime factor larger than n. Hence the Hamming numbers are the generalised Hamming numbers of type 5. | ||
|  | 
 | ||
|  | How many generalised Hamming numbers of type 100 are there which don't exceed 109? | ||
|  | 
 | ||
|  | # --hints--
 | ||
|  | 
 | ||
|  | `euler204()` should return 2944730. | ||
|  | 
 | ||
|  | ```js | ||
|  | assert.strictEqual(euler204(), 2944730); | ||
|  | ``` | ||
|  | 
 | ||
|  | # --seed--
 | ||
|  | 
 | ||
|  | ## --seed-contents--
 | ||
|  | 
 | ||
|  | ```js | ||
|  | function euler204() { | ||
|  | 
 | ||
|  |   return true; | ||
|  | } | ||
|  | 
 | ||
|  | euler204(); | ||
|  | ``` | ||
|  | 
 | ||
|  | # --solutions--
 | ||
|  | 
 | ||
|  | ```js | ||
|  | // solution required | ||
|  | ``` |