2,9,5,49,11,169........................?

• prime series with alternate squares:-
  2,3^2,5,7^2,11,13^2,
  next no.= 17
• 11 years agoHelpfull: Yes(128) No(13)
• prime number series: 2,3,5,7,11,13,17,19....
  
  By observing the given series,the alternate series in the prime number series is square hence....
  
  2,3^2,5,7^2,11,13^2,17,19^2...=> 2,9,5,49,11,169,17,361
• 11 years agoHelpfull: Yes(25) No(2)
• next no is 20
  2,3^2,5,7^2,11,13^2,20,22^2
  check 2+3=5,5+6=11,11+9=20
  check 3^2+4=7^2,7^2+6=13^2,13^2+9=22^2
• 11 years agoHelpfull: Yes(12) No(20)
• 2 series
  2,5,11
  3^2,7^2,13^2
  missing term belongs to first series
  2,(2+3),(5+6),(11+12) so my answer is 23
• 11 years agoHelpfull: Yes(8) No(7)
• prime series with alternate squares:-
  2,3^2,5,7^2,11,13^2,
  next no.= 17
• 10 years agoHelpfull: Yes(7) No(0)
• 2*2+1=5
  5*2+1=11
  11*2+1=23
• 11 years agoHelpfull: Yes(5) No(5)
• 2,9,5,49,11,169.........?
  ans: 2,3^2,5,7^2,11,13^2, (17)
  all are in prime numbers difference is middle numbers is squres in that order 17 is next number
  
• 10 years agoHelpfull: Yes(4) No(0)
• 2,3*3,5,7*7,11,13*13,17
  answer is 17 .
• 9 years agoHelpfull: Yes(4) No(0)
• prime numbers are 2,3,5,7,11,13,17,19.....
  2
  3^2=9
  5
  7^2=49
  11
  13^2=169
  answer is
  17
  19^2=361
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• 9 years agoHelpfull: Yes(2) No(0)
• 2,3^2,5,7^2,11,13^2
  2+3 = 5
  5+7 = 11
  11+13 = 24
  so, next no. is 24.
• 10 years agoHelpfull: Yes(1) No(14)
• ans is 17.
• 9 years agoHelpfull: Yes(0) No(1)
• My answer is 18.
  The sequence could be described as 'x,y,(y/x+n),...;
  where:
  n=1(2,9.5),2(5,49,11),3(11,169,?)
• 8 years agoHelpfull: Yes(0) No(7)
• sequence of prime numbers with alternate squares.......2,3^2,5,7^2,11,13^2,17.....
  
• 7 years agoHelpfull: Yes(0) No(0)
• 2,3^2,5,7^2,11,13^2,17
  ans is 17
• 7 years agoHelpfull: Yes(0) No(0)
• 2,3^2,5,7^2,11,13^2,
  next no.= 17
• 6 years agoHelpfull: Yes(0) No(0)
• 17 alternate prime number multiplied by 1
• 6 years agoHelpfull: Yes(0) No(0)
• answer 22
• 5 years agoHelpfull: Yes(0) No(1)