The calculator appears to show that 2 67 + 4 67 = 4 67 = 2.1778071483 × 10 40 , which would seemingly disprove Fermat's Last Theorem. For those who slept through number theory, Fermat's Last Theorem states that no three positive integers a, b, and c can satisfy a n + b n = c n for any integer n > 2. What we're witnessing is just a calculator reaching its computational limits and rounding errors. The difference between these massive numbers is too small for the calculator to display. It's like claiming you've disproven relativity because your bathroom scale doesn't register the mass increase when you run really fast.