Count to 1000

[Armani]

255 = 11111111(binary) = FF(hexadecimal)

[kaywhyn]

256 = 16²

[∫tan x dx]

257 = A Fermat prime!

https://en.wikipedia.org/wiki/Fermat_number

As of writing, only five such numbers are known!

[Silken Healer]

Wow! This thread suddenly got three posts on the same day. I was worried this thread had virtually died out at this point.

It's a shame due to The64Watcher that the post numbers got out of sync.

258 - IG 258 pill

[AsahiNyan]

         
                                                                            
                                                                            
                                                                            
         
                                                                                 
                                                                                 
                                                                                 
         

[WillLem]

[AsahiNyan]

[Silken Healer]

2-6-2 locomotive.



Moderator reminder: Please keep to the spirit of the topic and keep counting from the previous post +1 to the previous number. I've removed any posts not doing this.
Also, instead of replying to users not doing this, while it is appreciated   
instead please report the offending post.

Thanks

Flopsy

[AsahiNyan]

NGC 263

NGC 263 is a spiral galaxy located in the constellation Cetus. It was discovered in 1886 by Francis Leavenworth.

— Wikipedia

[Silken Healer]

H.264 codec