MathDB
A pretty easy factorization

Source: ARGENTINA MO 2023 National Level 3 P4

March 21, 2024
number theoryprime numbers

Problem Statement

Lets say that a positive integer is goodgood if its equal to the the subtraction of two positive integer cubes. For example: 77 is a goodgood prime because 23āˆ’13=72^3-1^3=7.
Determine how much the last digit of a goodgood prime may be worth. Give all the possibilities.
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