2⁸⁰ − 2⁶⁴. But approximate: 2⁸⁰ ≈ (2¹⁰)⁸ ≈ (10³)⁸ = 10²⁴, 2⁶⁴ ≈ 10¹⁉² → difference ≈ 10²⁴ − 10¹⁹² → too big. Use logarithmic scale. - Abu Waleed Tea