Running gnfs on c117@i2872.

Doing curves at 11M on the c149. Edit: 44M

[QUOTE=akruppa;286711]Doing curves at 11M on the c149.[/QUOTE]
running poly search. I'll post one tonight unless someone finds a factor.

[QUOTE=jrk;286717]running poly search. I'll post one tonight unless someone finds a factor.[/QUOTE]

[code][color=blue]# sieve with ggnfs lasieve4 I14e on alg side from Q=8M to 30M[/color]
# aq4788:2875
n: 44944968120798970101956399260161048307127624608363627768855259786875744937516514253381492976598354377631809096637742242405056022967763594463388725947
# norm 2.165061e-14 alpha -8.021700 e 6.736e-12 rroots 5
skew: 2076131.15
c0: -2724152092669553301350919758264155248
c1: 19148983504629007377598273822658
c2: -6876114514422853669377235
c3: -12263406826598895700
c4: 947045644148
c5: 794352
Y0: -35524959071412568874372278765
Y1: 10439608423446181
rlim: 16000000
alim: 16000000
lpbr: 29
lpba: 29
mfbr: 58
mfba: 58
rlambda: 2.5
alambda: 2.5
[/code]

[QUOTE=Andi47;286445]I'd prefer 2[SUP]1[/SUP]*3[SUP]0[/SUP][/QUOTE]
2^0*x is even better, for any x except a square... :P

Found 6836077383647882167495637621893086479456936569

********** Factor found in step 2: 4387050301986034667561975512302171805093213

Update - another one:

********** Factor found in step 2: 583358317624551201719447527348636163

Number 3:

Found probable prime factor of 44 digits: 10174073890280464531539919236320115459913679

The sequence tries to imitate 890460 with it's 2^9 · 3^8 :smile::

2^2 · 3^4 after 2^2 · 3^2 and 2^2 · 3.

Now a c136 @ i2883.

[QUOTE=LaurV;286754]2^0*x is even better, for any x except a square... :P[/QUOTE]

What would it require to get 2^0*x? something like 2²*p²?

[QUOTE=Andi47;286847]What would it require to get 2^0*x? something like 2²*p²?[/QUOTE]
2[SUP]m[/SUP]z[SUP]2[/SUP], m>0.
[URL="http://www.factordb.com/sequences.php?se=1&eff=2&aq=2%5E60*%282%5E61-1%29*112986307451471003597&action=range&fr=0&to=10"]Example[/URL].