Number problem

For how many integer values of i, 1 ≤ i ≤ 1000, does there exist an integer j, 1 ≤ j ≤ 1000, such that i is a divisor of 2j−1?
-

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

Echo , the dolphin

Echo, a dolphin is trying to jump through a circular hole in his enclosure to escape from the aquarium. From echo's perspective just u...

  • The Nested dolls
    For her birthday, I bought my daughter a set of five nested wooden dolls, similar to those originating in China. The set appears as one do...
  • Riddling Riddles
    1. Poor people have it. Rich people need it. If you eat it , you die. What is it? 2. If you don't keep me, I will break. 3. Take o...
  • 5. Globe Traversal
    How many places are there on earth where one could walk one mile south, then one mile west, then one mile north and end up in the same spo...