20201122, 16:41  #1728 
Jul 2003
wear a mask
1,483 Posts 
M14039173 has a factor: 4281610697981019482542271 (P1, B1=550000, B2=550000, e=12, n=800K CUDAPm1 v0.22)
P1 = 4 281610 697981 019482 542270 = 2 × 5 × 131 × 193 × 2243 × 20147 × 26693 × 14 039173 Another factor missed by late2001 P1 result. 
20201122, 17:26  #1729  
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
17×263 Posts 
Quote:


20201122, 17:37  #1730  
"James Heinrich"
May 2004
exNorthern Ontario
2·1,597 Posts 
Quote:
Quote:
Remembering that Mersenne factors occur in the form of 2 * exponent * k + 1, in this case: 4281610697981019482542271 = 2 * 14039173 * (5 × 131 × 193 × 2243 × 20147 × 26693) + 1 (masser expressed this with 1 removed from both sides) The factor should have been found in stage1 of the original P1 run in 2001, another victim of buggy P1 implementation in early Prime95. 

20201122, 20:59  #1731 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
1000101110111_{2} Posts 

20201122, 21:04  #1732 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
17×263 Posts 
Are there enough errors that its worth redoing all early P1s from a certain time frame? Wouldn't take nearly as long now

20201122, 22:06  #1733  
"James Heinrich"
May 2004
exNorthern Ontario
2·1,597 Posts 
Quote:


20201123, 02:38  #1734 
1976 Toyota Corona years forever!
"Wayne"
Nov 2006
Saskatchewan, Canada
17×263 Posts 
68613220865556854534588910185633642635647672703702073263
Composite factor found for 43028351 with P1. Has two 7digit palindromes within it: The corresponding Prime Factors 84906808619428164689743 808100339433284836173218656436641 The smaller has a 5digit palindrome within it. The middle 3 digits of which are the beginning of the larger factor. 
20201124, 18:34  #1735  
Random Account
Aug 2009
U.S.A.
2×7×11^{2} Posts 
Quote:
What I ran then were all between 7e6 and 8e6. I just generated another list. What I see now starts just below 37e5 and ascends rapidly, so some new ones have been added to the lower end. 

20201124, 18:44  #1736  
"James Heinrich"
May 2004
exNorthern Ontario
2·1,597 Posts 
Quote:


20201128, 18:37  #1737 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
10001011100111_{2} Posts 
George just found a biggy:
100817777 has a factor 7594873610247018123015770141312996569 37 digits 122.5 bits Ken found a big one too: 101273659 has a factor 375324496211112358228921438201039041097 39 digits 128.1 bits Last fiddled with by Uncwilly on 20201128 at 18:40 
20201128, 19:19  #1738 
"James Heinrich"
May 2004
exNorthern Ontario
2×1,597 Posts 
And George's wasn't even with Prime95 (but rather gpuowl).

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