Martijn Courteaux

546 reputation

310

bio	website
	location	Belgium
	age	17
visits	member for	2 years, 3 months
	seen	May 5 at 14:04
stats	profile views	140

I'm writing Java, C++ and now beginning with Objective-C. I started in 2007 (when I was 11). I was trying to make something in Excel and one of my family said: "Martijn, you shouldn't be doing that in Excel, make your own program to solve that problem." And then I start to learn Java.

Creative Zen (MP3)

Creative Zen: I lost my MP3-player in the forest of Nobertin.
Creative Zen: J'ai perdu mon MP3 dans le forêt de Nobertin en Wallonië. Contacte moi si vous l'avez trouvé, svp. Creative Zen: Ik ben mijn MP3-Speler verloren in het bos Nobertin in Wallonië. Contacteer me als u het gevonden zou hebben, aub.

martijn courteaux skynet be
       .         @      .

	546 reputation	bio	website		visits	member for	2 years, 3 months
310 badges		location	Belgium		seen	May 5 at 14:04

summary answers questions tags badges favorites bounties reputation activity

5 Questions

votes activity newest

30	Prove that 16, 1156, 111556, 11115556, 1111155556… are squares.
6	Trigonometry: Solve $(1-\cos\alpha)^2 + \sin^2\alpha = d^2$ for $\alpha$
5	Why are these two functions equal?
1	Analytic Geometry: Point coordinates, same distance from two points
1	Infinite Summation of positive numbers is? Infinite?

546 Reputation

+100	Prove that 16, 1156, 111556, 11115556, 1111155556… are squares.
+20	Deleting any digit yields a prime… is there a name for this?
+20	Prove that 16, 1156, 111556, 11115556, 1111155556… are squares.

4 Answers

votes activity newest

14	Deleting any digit yields a prime… is there a name for this?
6	Prove that 16, 1156, 111556, 11115556, 1111155556… are squares.
1	How to determine number with same amount of odd and even divisors
1	Median of a set of Integer

8 Tags

21 elementary-number-theory × 4	1 statistics
14 recreational-mathematics	0 trigonometry × 2
14 prime-numbers	0 analytic-geometry
6 sequences-and-series × 3	0 functions

10 Accounts

	Stack Overflow	19,490 rep	851128
	Game Development	594 rep	413
$Mathematics Stack Exchange$	Mathematics	546 rep	310
	Super User	190 rep	6
	Meta Stack Overflow	161 rep	6