fond of a factor? Urn yourself to become remains - Page 107

Jwb52z · 2016-10-02, 21:09

P-1 found a factor in stage #2, B1=665000, B2=12635000.
UID: Jwb52z/Clay, M79505071 has a factor: 13162456229681530231421707433 (P-1, B1=665000, B2=12635000)

93.410 bits.

lycorn · 2016-10-03, 13:14

Quote:

Originally Posted by Miszka

It's my the best result

Congrats!
An awesome finding.

Miszka · 2016-10-03, 14:03

Quote:

Originally Posted by lycorn

Congrats!
An awesome finding.

Many thanks for you.
My previous the best result was 24523881623890845010007531389564120430998338703 (154,1 bits 47 digits) for M31051

lycorn · 2016-10-03, 19:56

Just out of curiosity, what were the bounds used? It's funny that they do not show up in the report.

Miszka · 2016-10-03, 22:20

Quote:

Originally Posted by lycorn

Just out of curiosity, what were the bounds used? It's funny that they do not show up in the report.

ECM found a factor in curve #24, stage #2
Sigma=3677350809829694, B1=3000000, B2=300000000.
UID: mikr/MSI, M31051 has a factor: 24523881623890845010007531389564120430998338703, AID: 37DA0E9F3CF2495E43A0992C161441C5

Uncwilly · 2016-10-03, 23:53

Quote:

Originally Posted by Miszka

ECM found a factor in curve #24, stage #2
Sigma=3677350809829694, B1=3000000, B2=300000000.
UID: mikr/MSI, M31051 has a factor: 24523881623890845010007531389564120430998338703, AID: 37DA0E9F3CF2495E43A0992C161441C5

It was previously reported by mikr in 2014
http://www.mersenne.org/report_expon...ll=1&ecmhist=1

James Heinrich · 2016-10-04, 01:25

Isn't that what Miszka just said?

Uncwilly · 2016-10-04, 01:33

Quote:

Originally Posted by James Heinrich

Isn't that what Miszka just said?

oops, I thought that was a report of a new factor.

lycorn · 2016-10-04, 12:36

Quote:

Originally Posted by Uncwilly

It was previously reported by mikr in 2014
http://www.mersenne.org/report_expon...ll=1&ecmhist=1

Right. But you won't find there the usual info about the bounds. That's why I asked.
It's not common to find a 47-digit factor with a 3e6 B1!

Miszka · 2016-10-08, 08:51

I found very rough prime factor of M199453: 703714563044693056037968277785991 (109.1 bits)
k (90.511 bits) = 5 × 352822250377127973025208083
(ECM curve 219, stage #1, B1=250000, B2=25000000)

GP2 · 2016-10-08, 09:42

Quote:

Originally Posted by Miszka

I found very rough prime factor of M199453: 703714563044693056037968277785991 (109.1 bits)
k (90.511 bits) = 5 × 352822250377127973025208083
(ECM curve 219, stage #1, B1=250000, B2=25000000)

Hah, I can top that:

M5501, factor 124424631532117825221239927348589023

k = 11309273907663863408583887234011 (a 32-digit prime)

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2016-10-02, 21:09	#1167
Jwb52z Sep 2002 17×47 Posts	P-1 found a factor in stage #2, B1=665000, B2=12635000. UID: Jwb52z/Clay, M79505071 has a factor: 13162456229681530231421707433 (P-1, B1=665000, B2=12635000) 93.410 bits.

2016-10-03, 19:56	#1170
lycorn "GIMFS" Sep 2002 Oeiras, Portugal 3×491 Posts	Just out of curiosity, what were the bounds used? It's funny that they do not show up in the report.

2016-10-04, 01:25	#1173
James Heinrich "James Heinrich" May 2004 ex-Northern Ontario 11×311 Posts	Isn't that what Miszka just said?

2016-10-08, 08:51	#1176
Miszka May 2013 Poland 51₁₆ Posts	I found very rough prime factor of M199453: 703714563044693056037968277785991 (109.1 bits) k (90.511 bits) = 5 × 352822250377127973025208083 (ECM curve 219, stage #1, B1=250000, B2=25000000)