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Old 2015-11-25, 19:46   #15
Ale
 
Nov 2015

110012 Posts
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(20:40) gp > 304795270400000*3*4*5*6*3*2*4*5*7*8*3*5*7*8*3*7*8*9
%67 = 936507100910085734400000000
(20:41) gp > isprime(%-1)
%68 = 1
(20:42) gp >

and this is the number 9 , but is different , is more complex , thinking
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