I think its possible to make every number with 4 fours, Anyways since Vaicun should have done 15, I'll do 16 xD 4+4+4+4=16 I feel so smart :)
You can only use fours, no 1/2's or things like that. Anyway, 17 could be 4*4+4/4 18 could be 4*4+4/4sqrt
Not really lel. The largest possible is 4^(4^(4^4)), which is a HUGE number, about 10^(8*10^153). Anyway, 21 = 4^2+4+4/4
Actually the biggest number you can make wih four fours is 4 to the power of 4 to the power of 4 to the power of 4, aka 256 to the power of 256 22 = 4 Split to 2 2s 4^2 + 4 +4 - 2
You must use four fours, you can't split it into two twos. Also, for those of you using 4^2, you CANNOT do that, you're using a 2. Just use 4 sqrt instead. Anyway, 23. 4! - 4 sigma/4 sqrt + 4
Wrong. 4^(4^(4^4)) is a SHIT LOAD bigger, it's over a googol digits long. 256^256 is so much less than that you couldn't compare it, it's merely 617 digits long. Don't believe me? Try here.