import java.lang.Math;
import java.util.*;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int num[];
		num=new int[200];
		int k=0;
		num[0]=1;
		int count=1;
		for(int i=2; i<=1000; i++)
		{
			k=0;
			for(int j=2; j<=Math.sqrt(i); j++)
				if(i%j==0)
				{
					k=1;
					break;
				}
				if(k==0)
				{
					num[count]=i;
					count++;
			//		System.out.println(i);
				}
			
		}
		Scanner in;
		in=new Scanner(System.in);
		while(in.hasNext())
		{
			int a,b;
			int i;
			a=in.nextInt();
			b=in.nextInt();
			for(i=178; i>=1; i--)
				if(num[i]>a && num[i-1]<=a)
					break;
		//	System.out.print(i+"\n");
			System.out.print(a+" "+b+":"+" ");
			if(2*b>=i)
			{
				for(int j=0; j<i; j++)
					System.out.print(num[j]+" ");
				System.out.println();
			}
			else if(i%2==0)
			{	
				for(int j=i/2-b; j<=i/2+b-1; j++)
					System.out.print(num[j]+" ");
				System.out.println();
			}
			else
			{
				for(int j=i/2-b+1; j<=i/2+b-1; j++)
					System.out.print(num[j]+" ");
				System.out.println();
			}
			
		}

	}
}