390 B
		
	
	
	
	
	
	
	
			
		
		
	
	
			390 B
		
	
	
	
	
	
	
	
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Prime and composite numbers
Definition of a prime number:
For any whole number
nwheren \neq 1,nis prime if and only if its sole factors are1andn
Definition of a composite number:
For any whole number
n,nis composite just ifnis not prime