17116Proving a smooth number +/- 1 prime
- Nov 1, 2005Is the following true?
For any number n with less than 20000 digits, if n+1 or n-1 is
an easily factorable smooth number, then the primality/non-primality
of n can be established with certainty.
If so, what is the primality proof method called?
Ed Pegg Jr.
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