What is the next number of the following sequence
13, 34, 74, 170, 290, ..............

• Here, each number is the sum of square of prime numbers.
  2^2+3^2=13
  3^2+5^2=34
  5^2+7^2=74
  7^2+11^2=170
  11^2+13^2=290
  13^2+17^2=458
• 9 years agoHelpfull: Yes(1) No(0)
• answer is 458
  square and add 2 consequent prime numbers 2 3 5 7 11 13 17
  2^2+3^2 =13
  3^2+5^2=34
  5^2+7^2=74
  7^2+11^2=170
  11^2+13^2=290
  13^2+17^2=458
• 9 years agoHelpfull: Yes(0) No(0)