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| Title: | Mathematics at DEC |
|
| Moderator: | RUSURE::EDP |
|
| Created: | Mon Feb 03 1986 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2083 |
| Total number of notes: | 14613 |
355.0. "Composite k*2^n+1" by TOOLS::STAN () Thu Oct 17 1985 14:43
(Mike Filaseta)
Suppose that k>1 is an odd integer such that k*2^n+1 is
composite for every integer n>=0. Is it true that there are
positive integers a[1], a[2], ... a[r] > 1 (depending on k)
such that for every integer n>=0, k*2^n+1 is divisible by a[j] for
some j in 1..r?
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