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Old 2008-07-19, 15:57   #8
Siemelink
 
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Jan 2006
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Quote:
Originally Posted by KEP View Post
Sierpinski base: 1023
1.: 13,61,1321 (covering no/yes?)
k: 632462
Exponent: 6

Kenneth!
A covering set means that there must be an elements of the set that divides 632462*1023^n+1, for any n. Occasionally there are more elements in that list than you strictly need. For this example you would have that

1321 divides 632462*1023^(3q+1)+1
61 divides 632462*1023^(3q+2)+1
13 divides 632462*1023^(3q+3)+1

covering all values of n.

Willem.
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