[QUOTE=retina;432391]If your system has a calculator application then you can compute it without the need to rely on an external website.
[/QUOTE]

Just be careful with something like Microsoft Excel, because it will silently cut down the precision to whatever is the maximum it can work with. There is xNumbers library that adds arbitrary precision functions to Excel.

Small One Turns Up A Large One
 

ECM found a factor in curve #54, stage #2
Sigma=6792843557510917, B1=1000000, B2=100000000.

M90679 has a factor: 6589076784209827854482269064939889241

(ECM curve 54, B1=1000000, B2=100000000)

122.3 bits....

Good one. It's always nice to knock out a sub-100k...

Yep, a good one. You found it four days after my ECM on the exponent, so I had my chance, but did not score. Great, one more is down.

another sub-100K bites the dust
 

[Mon Jun 6 23:12:20 2016]
ECM found a factor in curve #218, stage #2
Sigma=3267888520893954, B1=3000000, B2=300000000.
UID: BloodIce/URM2, M40423 has a factor: 164989575420758840709086391456486169
[URL]http://www.mersenne.ca/exponent/40423[/URL] : ~117 bits

[QUOTE=bloodIce;435692][Mon Jun 6 23:12:20 2016]
ECM found a factor in curve #218, stage #2
Sigma=3267888520893954, B1=3000000, B2=300000000.
UID: BloodIce/URM2, M40423 has a factor: 164989575420758840709086391456486169
[URL]http://www.mersenne.ca/exponent/40423[/URL] : ~117 bits[/QUOTE]

Even better, a sub 50k exponent goes down...:smile:

And another one...
 

@bloodice: you're getting really good at finding these...
How do you do it? :smile:
M36109 has a factor.

[QUOTE=lycorn;435743]@bloodice: you're getting really good at finding these...
How do you do it? :smile:
M36109 has a factor.[/QUOTE]

Put us out of our misery then... :smile:

sub-40K down today
 

Today a sub-40K bites the dust:
[Tue Jun 7 22:10:49 2016]
ECM found a factor in curve #113, stage #1
Sigma=629186646856962, B1=3000000, B2=300000000.
UID: BloodIce/Mjolnir4, M36109 has a factor: 600691002840126002796941760359632040567 (ECM curve 113, B1=3000000, B2=300000000)
[URL]http://www.mersenne.ca/exponent/36109[/URL]: ~129 bits

P.S.: Hehe, thanks for the friendly support. No mystery, just dedicating 7 cores for small ECM work and of course try 3 to 4 neighbouring exponents in batches on each machine. It is an extreme luck, that is what it is :-).

[code]
ECM found a factor in curve #196, stage #2
Sigma=7609780438895502, B1=50000, B2=5000000.
UID: VictordeHollander/PC3770K, M1557419 has a factor: 2913347056784507060325933694843071809 (ECM curve 196, B1=50000, B2=5000000)[/code]
Not very special in terms of size (37 digits, 122 bits), but pretty decent hit with only B1=50,000 and B2=5,000,000

M5923 factored
 

Congratulations to Carsten Kossendey.