About the return false statement

#1

When :
if(n%i==0){
return false;
}
if this condn is true then where will the loop terminate and in lecture bhaiya said that if the condn is true the controls goes to again main function ,please explain

#2

@mayurjhode55,
when you write return anywhere in the function definition, the program control returns to the function, from where this function was called, in this case the main function.