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wu :: forums    riddles    medium (Moderators: Eigenray, Grimbal, towr, SMQ, ThudnBlunder, william wu, Icarus)    A question from IMO 2008 « Previous topic | Next topic » Pages: 1  Reply Notify of replies Send Topic Print    Author  Topic: A question from IMO 2008  (Read 562 times) wonderful Full Member     Posts: 203 A question from IMO 2008   « on: Jul 16th, 2008, 2:40pm » Quote Modify Prove that there are infinitely many positive integers  n  such that  n^2 + 1  has a prime divisor greater than 2n+ sqrt(2n).   Have A Great Day!   IP Logged Pages: 1  Reply Notify of replies Send Topic Print Forum Jump: ----------------------------- riddles -----------------------------  - easy => medium   - hard   - what am i   - what happened   - microsoft   - cs   - putnam exam (pure math)   - suggestions, help, and FAQ   - general problem-solving / chatting / whatever ----------------------------- general -----------------------------  - guestbook   - truth   - complex analysis   - wanted   - psychology   - chinese « Previous topic | Next topic »

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