Recent content by kurtulmehtap

  1. K

    Graduate Difficult Number Theory question

    Let q be a prime, k= q-2 and X be an Integer, I have found solutions for q=5,7,17 for the equation (2^k) - 7 = X^2 . I have checked q for up to 1000000 but was not able to find any other solutions. Please prove if there can be more solutions or none for this equation. Thanks in...
  2. K

    Undergrad Is there a test for binary numbers divisible by 2^n - 1?

    in my case n is even, not odd or prime
  3. K

    Undergrad Is there a test for binary numbers divisible by 2^n - 1?

    Dear All, I have to test if a binary number is divisible to 2^n - 1 where n is even. Is there a test available for binary numbers like to test a divisibility by 3. Thanks in advance...