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Andy Lee
Andy Lee is offline
#49
Jan15-10, 08:27 AM
P: 30
Quote Quote by CRGreathouse View Post
Ah. Then you entirely misunderstood. My bound (which is tight) was only for divisibility by 3 for n or 2N - n. It's worse for divisibility for 3 and 5, and worse yet for divisibility by 3, 5, and 7.
Yes. Thanks for your time on this.