Archive for November 2010
That's mathematics! (by Tom Lehrer)
Posted by: Gary Ernest Davis on: November 13, 2010
How do you find a power of 2 that begins with a 9?
Posted by: Gary Ernest Davis on: November 13, 2010
The problem of finding a power of 2 that begins with a 9 was posed in the recent #mathjams conference in the UK. I tweeted: republicofmath 2^n begins with 9 for n = 53, 63, 73, 83, 93, 156, 166, 176, 186, 249, 259, 269, 279, 289, 352, 362, 372, 382, 445, 455, 465 … […]
