Subproject #1: 210k-250k sequences to 100 digits - Page 13

mdettweiler · 2009-07-17, 19:48

Unreserving 239412 at i=398, C113 (C109 cofactor), driver 2^3*3*5*31.
Reserving 239442.

Edit: whoops! Looks like 239442 is already reserved. I'll take 239448 instead.

fivemack · 2009-07-17, 23:12

Reserving 243342 (palindromes 'r' us), 247266

mdettweiler · 2009-07-17, 23:31

Unreserving 239448 at i=287, C102 (C92 cofactor), driver 2^3*3*5^2.
Reserving 239520.

Greebley · 2009-07-18, 00:20

238764 is also finished. It went to 109 digits in a short time with 2^3*3*5^2 driving it up.

mdettweiler · 2009-07-18, 01:58

Unreserving 239520 at i=824, C103 (C95 cofactor), driver: 2^2*3^5 (or is this a guide?)
Reserving 239652.

Mini-Geek · 2009-07-18, 02:20

Quote:

Originally Posted by mdettweiler

driver: 2^2*3^5 (or is this a guide?)

http://www.mersennewiki.org/index.php/Aliquot_Sequences
Guide. Factors of 3 are quite persistent with the 2^2 guide, (seems to me to often last until the end of that guide) and cause it to go up instead of down, but it is still the 2^2 guide.

henryzz · 2009-07-18, 09:44

Full update done.
There has been a huge amount of activity over the last week.
Unfortunately there are no downdrivers and not many sequences without drivers.
I am now about to copy sequences now above 100 digits to the main thread.

unconnected · 2009-07-18, 11:45

Reserving 245406, 244470.

Greebley · 2009-07-18, 13:17

Done with 238728 - 103 digits and 2*3^2*5

mataje · 2009-07-18, 16:43

243402: line 923, size 106, 2^2*3 UNRESERVED
243912: line 858, size 101, 2^4*3^2*5 UNRESERVED
BTW: 257184: line 1406, size 113, 2^2 UNRESERVED

henryzz · 2009-07-18, 20:09

unreserving 236760

2009-07-17, 19:48	#133
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 3×2,083 Posts	Unreserving 239412 at i=398, C113 (C109 cofactor), driver 2^33531. Reserving 239442. Edit: whoops! Looks like 239442 is already reserved. I'll take 239448 instead. Last fiddled with by mdettweiler on 2009-07-17 at 19:49*

2009-07-17, 23:12	#134
fivemack (loop (#_fork)) Feb 2006 Cambridge, England 2³·11·73 Posts	Reserving 243342 (palindromes 'r' us), 247266 Last fiddled with by fivemack on 2009-07-17 at 23:13

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2009-07-17, 23:31	#135
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 3×2,083 Posts	Unreserving 239448 at i=287, C102 (C92 cofactor), driver 2^335^2. Reserving 239520.

2009-07-18, 00:20	#136
Greebley May 2009 Dedham Massachusetts USA 3×281 Posts	238764 is also finished. It went to 109 digits in a short time with 2^335^2 driving it up.

2009-07-18, 01:58	#137
mdettweiler A Sunny Moo Aug 2007 USA (GMT-5) 1869₁₆ Posts	Unreserving 239520 at i=824, C103 (C95 cofactor), driver: 2^2*3^5 (or is this a guide?) Reserving 239652.

2009-07-18, 09:44	#139
henryzz Just call me Henry "David" Sep 2007 Cambridge (GMT/BST) 1011011111110₂ Posts	Full update done. There has been a huge amount of activity over the last week. Unfortunately there are no downdrivers and not many sequences without drivers. I am now about to copy sequences now above 100 digits to the main thread.

2009-07-18, 11:45	#140
unconnected May 2009 Russia, Moscow 2,593 Posts	Reserving 245406, 244470.

2009-07-18, 13:17	#141
Greebley May 2009 Dedham Massachusetts USA 3·281 Posts	Done with 238728 - 103 digits and 23^25

2009-07-18, 16:43	#142
mataje Jan 2009 Bilbao, Spain 283 Posts	243402: line 923, size 106, 2^23 UNRESERVED 243912: line 858, size 101, 2^43^2*5 UNRESERVED BTW: 257184: line 1406, size 113, 2^2 UNRESERVED

2009-07-18, 20:09	#143
henryzz Just call me Henry "David" Sep 2007 Cambridge (GMT/BST) 2·3³·109 Posts	unreserving 236760