HP Forums / Not HP Calculators / Not remotely HP Calculators v / Sum of three cubes for 42 finally solved

Post Reply 
Sum of three cubes for 42 finally solved
09-14-2019, 09:14 PM (This post was last modified: 09-14-2019 09:20 PM by Gerson W. Barbosa.)
Post: #4
Gerson W. Barbosa Offline
Senior Member
 		Posts: 1,625
Joined: Dec 2013
RE: Sum of three cubes for 42 finally solved
(09-14-2019 06:11 PM)DA74254 Wrote:  ...and the fun part; the HP/Free/DM42 is not able to calculate it's own self Wink

34 significant digits are not enough for the task. That would require at least 50. Not a problem for the HP 50g in exact mode, though:

'(-80538738812075974)^3+80435758145817515^3+12602123297335631^3'

EVAL ->

42

PS.: Unfortunately there are no solutions for 49 and 50.
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: Sum of three cubes for 42 finally solved - Gerson W. Barbosa - 09-14-2019 09:14 PM



User(s) browsing this thread: 4 Guest(s)

Contact Us | The Museum of HP Calculators | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication