Re: [math-fun] 2015 is palindromic in binary

On 2015-12-08 12:29, Tom Rokicki wrote:

This would have been more appropriate about 11 months ago.

2015 = 11111011111 in base 2. When's the next time that happens?

Isn't it 2047? (If the last 5 bits were anything other than 11111, the high order bits would have to change, too, and that could take a bunch more years).