The numbers {1,3,6,7,7,7} are used to form three 2-digit numbers.If the sum of these three numbers is a prime number p,wwhat is the largest possible value of p?

• I think 211 is the largest prime number possible.
  
  
  77+63+71 = 211
• 12 years agoHelpfull: Yes(4) No(1)
• 211 is the largest prime number.
  
  Formation of 3 two digit number from {1,3,6,7,7,7} : (Maximum)
  
  76, 73 and 71. Sum : 76+73+71 = 220. But 220 is not a prime number. Now again form 3 two digit number.
  
  67,73 and 71. Sum : 67+73+71 = 211. It is a prime number
• 12 years agoHelpfull: Yes(2) No(1)
• 1489
  
  773+716 = 1489
• 12 years agoHelpfull: Yes(1) No(2)
• 211
  
  considering three 2 digit numbers
  
  77+63+71 = 211
• 12 years agoHelpfull: Yes(1) No(0)
• 67 prime number
  73 prime number
  71 prime number total=211
• 10 years agoHelpfull: Yes(0) No(0)