Friday, February 18, 2011 is 67 days from Dec 13.
January 20 + 67 days = March 28
02/13/67
67 days 13 hours and 25 minutes
13*67=871871=13*67
13 x 67 = 871
the sum of 67 + 13 = 80
67 days is 9 weeks and 4 days
67
67 hours = 2.8 days.
13 hours 45 minutes 6 days 67 seconds
The GCF of 13 and 67 is 1.
13 and 67 are prime.