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  1. # require 'Math'
  2. class Prime
  3. 	def calc
  4. 		i = 1
  5. 		j = 1	
  6. 		max = 1
  7. 		limit = 600851475143
  8. 		for i in 2..limit
  9. 			prime = true
  10. 			for j in 2..Math.sqrt(i)
  11. 				if i%j==0 
  12. 					prime = false
  13. 					break
  14. 				end
  15. 			end
  16. 			if prime == true 
  17. 				if limit % i == 0
  18. 					if i>max
  19. 						max = i							
  20. 					end   
  21. 				end
  22. 			end				
  23. 		end
  24. 	return max	
  25. 	end	
  26. end
  27.  
  28. num = Prime.new
  29. print num.calc
Time limit exceeded #stdin #stdout 5s 29720KB
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https://ideone.com/36Y9ni
language:
Ruby (ruby 2.5.5)
created:
7 years ago
visibility:
public

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