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Old 2021-11-17, 05:54   #3147
Drdmitry
 
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Nov 2011

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By the way, 4788 has reached a milestone: it is the first aliquot sequence to reach 225 digits. It is now at index 12624 and has length of 228 digits.
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Old 2021-11-17, 17:48   #3148
ryanp
 
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The c214 blocker at i12624 has not yielded to 18K curves @ B1=85e7. I am continuing to run ECM on it.
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Old 2021-11-30, 22:23   #3149
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I am not actively working on this sequence now. Would consider running GNFS if there's an effort to find a good poly / params.
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Old 2021-12-01, 00:06   #3150
VBCurtis
 
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I imagine that after the C221 Cunningham gets the poly/params treatment we will come after this one- likely early in the new year.
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Old 2023-03-26, 09:58   #3151
swellman
 
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AS 4788:i12624 is a c214:

Code:
2369544171343856544306685026234814730066176963310835702148525971308405603966519170758424921438462149828521650251748696646357482600258576335202868837784709075829616857099625086498754298101503599329233628535939026179
I believe degree 6 will prove optimal for a c214, so I’ll start searching 0-1M for a deg 6 using CADO with incr=420 and nq=6^7.
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Old 2023-03-28, 01:22   #3152
swellman
 
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Early result:

Code:
n: 2369544171343856544306685026234814730066176963310835702148525971308405603966519170758424921438462149828521650251748696646357482600258576335202868837784709075829616857099625086498754298101503599329233628535939026179
skew: 13676610.309
c0: 384225848458090339599132430195422033219668198361
c1: 234287070153696756044901952046448895583536
c2: -40221011551579151713468496828849942
c3: -7154464012304337003452145796
c4: 260488708773465911831
c5: 9924229749780
c6: -9450
Y0: -149764214467176269031365029522654862
Y1: 920496871277945539397
# MurphyE (Bf=3.436e+10,Bg=1.718e+10,area=1.476e+17) = 4.919e-09
# cownoise says skew of 18997496.24346 gives escore 5.98152074e-16
A lackluster score but a mark on the wall if nothing else. Continuing search towards 1M.
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