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 20200215 at 12:06
