20210517, 08:20  #1860 
"Oliver"
Sep 2017
Porta Westfalica, DE
1507_{8} Posts 
M103830131 has a 157.127bit (48digit) composite (P24+P24) factor: 199531333730879095999006796725214407904194653871 (P1,B1=1708000)
While the composite factor itself it not extremely interesting by itself, I find it interesting because:  it was found in stage 1.  the prime factors are very similar in size (78.460 and 78.667 bits). The prime factors are 415767534785818078323247 and 479910808412848576977793. 
20210517, 08:56  #1861 
Jun 2003
12230_{8} Posts 
Nice!

20210529, 14:38  #1862 
Romulan Interpreter
"name field"
Jun 2011
Thailand
71×139 Posts 
M106722533 has an 110 bits factor 771972811871697820846912678000249.
Albeit 110 bits is not a joke, the factor is not a record in itself, but it is quite large and nice, considering the fact that was found in stage 1 (yes, it is sooo smooth, like ice cream!) Last fiddled with by LaurV on 20210529 at 14:38 
20210529, 15:00  #1863 
"Viliam Furík"
Jul 2018
Martin, Slovakia
746_{10} Posts 

20210529, 15:17  #1864 
"James Heinrich"
May 2004
exNorthern Ontario
13·277 Posts 

20210530, 13:41  #1865  
Feb 2017
Nowhere
1010011101111_{2} Posts 
Quote:
From my "I can't count" liturgy: Versicle: How many bits in two to the first power? Responsory: Two, two. Versicle: How many decimal digits in ten to the first power? Responsory: Two, two. From the output of PariGP: Code:
? v=binary(771972811871697820846912678000249) %1 = [1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 1] ? #v %2 = 110 ? 

20210530, 16:17  #1866 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
24003_{8} Posts 
A nice run of the mill 79 bit factor: 1025757166134493292294953
But, it was found when I poached (not sorry) a stalled P1 that was in the lowest 25 exponents for FTC. 103547179 There are others down there that have zero check ins since assigned and are more than a month old and thus have violated the rules for Cat 0 (but the rules do seem to apply to P1 assignments down in the low FTC's)
Last fiddled with by Uncwilly on 20210530 at 16:19 
20210530, 16:41  #1867 
If I May
"Chris Halsall"
Sep 2002
Barbados
27CB_{16} Posts 
Just so you know, I'm working on those held by ANONYMOUS and Kas. Should all be done in about three days (assuming Colab cooperates).

20210530, 18:26  #1868 
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
2803_{16} Posts 

20210530, 22:22  #1869 
If I May
"Chris Halsall"
Sep 2002
Barbados
61×167 Posts 

20210530, 22:34  #1870 
"Viliam Furík"
Jul 2018
Martin, Slovakia
2×373 Posts 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Congruent prime numbers that preserves the modulo as the largest prime factor of the sum  Hugo1177  Miscellaneous Math  5  20210211 07:40 
Factorization factory  Branger  Factoring  15  20190905 15:03 
A fond farewell  rogue  Lounge  10  20081121 05:25 
Berry paradox without paradox.  victor  Puzzles  7  20080408 22:34 