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Unformatted text preview: 2 . 5 (7 points) . Express-15 47 as a continued fraction. 6 (8 points) . Let p be a prime number dividing x 2 + 1, where x is an even integer. Show that p 1 mod 4 and that p is prime to x . Deduce that there are an innite number of primes congruent to 1 mod 4....
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- Spring '08