3 ms·

The link is about 2^n not n^2.

• 1970-01-01 2y ago
  You assumed this out of air. "Powers of 2" means this: Here are the powers of 2 from \( 2^{-11} \) to \( 2^{11} \) in a table format: | Power of 2 | Value | |--------------|--------------------| | \( 2^{-11} \) | 0.00048828125 | | \( 2^{-10} \) | 0.0009765625 | | \( 2^{-9} \) | 0.001953125 | | \( 2^{-8} \) | 0.00390625 | | \( 2^{-7} \) | 0.0078125 | | \( 2^{-6} \) | 0.015625 | | \( 2^{-5} \) | 0.03125 | | \( 2^{-4} \) | 0.0625 | | \( 2^{-3} \) | 0.125 | | \( 2^{-2} \) | 0.25 | | \( 2^{-1} \) | 0.5 | | \( 2^{0} \) | 1 | | \( 2^{1} \) | 2 | | \( 2^{2} \) | 4 | | \( 2^{3} \) | 8 | | \( 2^{4} \) | 16 | | \( 2^{5} \) | 32 | | \( 2^{6} \) | 64 | | \( 2^{7} \) | 128 | | \( 2^{8} \) | 256 | | \( 2^{9} \) | 512 | | \( 2^{10} \) | 1024 | | \( 2^{11} \) | 2048 | The evens include "0"
  • thehappypm 2y ago
    0 is not in the “Value” column
  • andrewla 2y ago
    ?? This does not clarify -- your initial post made a claim about 0^2, which (correctly) does not appear in this list. Moreover it is trivial that there are no negative powers of 2 that have all even digits, since the trailing digit will always be 5. So the question reduces to whether there are powers of 2 greater than 2048 that have all even digits.