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Old 2004-10-28, 10:54   #6
Andi47
 
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Oct 2004
Austria

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I just did some trial division on 10^9999999+1 - the lowest odd 10 million digit number and found another small factor: 19 divides 10^9999999+1.

Other factors found so far (see also :this thread)

7 - found by heck
13 - can be read out of hecks table
11 - "manual" factoring using divisibility rule for p=11
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