1!+2!+....50!=?

• 31035053229546199656252032972759319953190362094566672920420940313
• 13 years agoHelpfull: Yes(4) No(31)
• this summation can be defined by reverse recurssion
  if you want the sum of the factorials from 1 to n then start with
  s(n) = n
  and then
  s(i) = i * ( 1 + s(i+1) )
  and s(1) gives the summation
  for example if n=4 we have
  s(4)=4
  s(3)=3*(4+1)=15
  s(2)=2*(15+1)=32
  s(1)=1*(28+1)=33
  which agrees with
  1!+2!+3!+4! = 1+2+6+24
  
  using a computer program and using this recurssion method I get the sum as
  31035053229546199656252032972759319953…
• 13 years agoHelpfull: Yes(0) No(7)