Express 585 as a product of prime numbers.

• 13*5*3*3=585
• 15 years agoHelpfull: Yes(4) No(1)
• 113*5
• 15 years agoHelpfull: Yes(3) No(2)
• 585 = 5*113
• 15 years agoHelpfull: Yes(2) No(1)
• 585 = 5*117
• 15 years agoHelpfull: Yes(0) No(0)
• 585 = 5*117 = 5*(3*39) = 5*3*(3*13).
  So, 585 = 13*5*5*3
• 15 years agoHelpfull: Yes(0) No(0)
• 585= 5*13*3*3
• 15 years agoHelpfull: Yes(0) No(0)
• Hi hi. Right... 585 = 13*5*3*3 and not 13*5*5*3 :)
• 15 years agoHelpfull: Yes(0) No(0)
• 585=13*5*3*3
• 14 years agoHelpfull: Yes(0) No(0)
• 13*5*3*3=585
• 9 years agoHelpfull: Yes(0) No(0)
• 585 = 5*13*3*3
• 7 years agoHelpfull: Yes(0) No(0)
• Can it be solved with less calculations ?
  possible numbers:
  
  2..8
  
  only because rest higher number would become greater than 4 digits when multiplied by 4, and the last digit cannot be 1 so that we can skip the smaller numbers as well.
  
  Reverse of 2..8 is 8..2
  (2000+100x+10y+8)∗4=(8000+100y+10x+2)
  8000+400x+40y+32=8000+100y+10x+2
  390x+30=60y
  195x+15=30y
  
  Possible solution:x=1,y=7
  Number:2178
• 5 years agoHelpfull: Yes(0) No(0)