View Single Post
Old 2020-02-15, 09:26   #1
enzocreti
 
Mar 2018

10000011112 Posts
Default Numbers sum of two cubes and product of two numbers of the form 6^j+7^k

344 and 559 are numbers that are sum of two positive cubes and product of two numbers of the form 6^j+7^k with j, k >=0. FOR EXAMPLE 344=43*8=7^3+1
Are there infinitely many such numbers?

IS 16 THE ONLY perfect POWER SUM OF TWO CUBES AND PRODUCT OF TWO NUMERS OF THE FORM 6^J+7^K J, K NONNEGATIVE?

Last fiddled with by enzocreti on 2020-02-15 at 12:06
enzocreti is offline   Reply With Quote