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This number is a prime.
Single Curio View: (Seek other curios for this number)5 requires 5 steps to reach 1 in the 3x + 1 (or Collatz) Problem. Paul Erdős said about the Collatz problem: "Mathematics is not yet ready for such confusing, troubling, and hard problems." He offered $500 for its solution. (Lagarias, 1985)
Submitted: 1999-09-02 18:40:00; Last Modified: 2012-04-02 14:24:59.
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