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Old 2003-10-04, 00:17   #1
GP2
 
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Sep 2003

2·5·7·37 Posts
Default Exponents with identical digits

Look for all prime exponents that have long strings of identical digits (all digits but one identical).

Eliminate those that have been factored or verified composite. What's left?

DoubleCheck=11111119,64,1
Test=55555553,64,0
DoubleCheck=59999999,71,1
Test=71111111,64,0


Edit: formerly was:
Test=55555553,58,0
Test=71111111,60,0

Edited as per following post.


Last fiddled with by GP2 on 2003-10-10 at 21:32
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Old 2003-10-10, 21:02   #2
hbock
 
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Feb 2003

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M55555553 no factor to 2^64, WZ1: 154A71BC
M71111111 no factor to 2^64, WZ1: AA89D93C

see new nofactor file
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Old 2007-11-19, 19:03   #3
jasong
 
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"Jason Goatcher"
Mar 2005

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I know this is an old thread, but what about patterns where the digit that's different isn't on the end of the exponent?
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