binary

Number system :
	
	binary number system 		(base 2 number system) : 0 1			(101)^2
	decimal number system 		(base 10 number system) : 0123456789		(57)^10
	octal number system 		(base 8 number system) : 01234567		(623)^8
	Hexadecimal number system 	(base 16 number system) : A-F 0123456789	(AF09)^2

 Decimal to binary : https://www.youtube.com/watch?v=iNn9KY45hnQ&list=PLWnrxMxuatxOpOXRZRTeMKWLWWzdDxTW3
 
	convert any decimal to binary : 
	devide by 2 , vagses will be binary.
	
	convert 29.30
	                    
			             2|29				
				     2|14 1
				     2|7  0
				     2|3  1
				     2|1  1
				     2|2  1
				     
				   so binary is : 11101  (bottom to top)

	convert .30 .for fraction multiply by 2 (if more than 1 start again).
	
				      .30
				       x2
				     0.60
				       x2
				     1.20
				       x2
				     0.40

				   so binary is : 010   (top to bottom)
				  
				   So total : 11101.010

	Same for decimal to octal 	: devide by 8 (for full number) & multy by 8 (for fraction number)
	same for decimal to hexadecimal : devide by 16 (for full number) & multy by 16 (for fraction number)
	

	binary to decimal : https://www.youtube.com/watch?v=ep0o6jxa1p4
	
	For convert first count total number.
	then devide by 2.
	then multiply by 1x 2^2 + 1x2^1 + 1x2^0 + 1x2^-1 + 1x2^2
	

 prime number : number that can devide by 1 & himself
 
 Make a algorithom of prime number. (check by root of prime number)
 
 Factor of a number : 1 number divide by how many number . 12 can divide by : 12,6,2,3,4,1 (so 12 have 5 factor) 
 
 Make a algorithom of factor number.