2LM

2^2630+1 L

Open composite · C293 · component L

NFS Planning

GNFS Murphy estimate: 2.26e-20
SNFS Murphy score: 2.69e-16
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.77754

Identifiers

Target expression: 2^1315+1-2^658
Target value: 715227654321105596037781310767505300372785543655583400456506150219731024267185582758198115359386079359488955926034786682526617722054379145757832689022055369690574489153523621120538149129731744269645620680965744407362820146609847835761344442378468654051571970519363661088467451872317570919512269371849933083593738193183540521022641729636967353732952372807695331289097694346695508563347751802241025
Target link: FactorDB page
Target ID: 1100000000002446473
Target changed: -
Parent query: 2^2630+1
Parent ID: -
Cofactor token: C293
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2,10L,526M) 5261.51253441.1480644206441. C293

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 2.69e-16
Skew: 0.77754
Selected: Best

n: 24173714733454867318378189741427077550503641464851734310128653099532501977567741789949100408608904651902270414180453468619082334774228335213771008093405219765106758549316814481378528053147850150377626922011674327842426890178331423718797685981087041215902555161665601852349163836878133537883481
# 2^2630+1 Aurifeuillian L, difficulty: 316.68, skewness: 0.71
# cost: 9.44817e+20, est. time: 449912.73 GHz days (not accurate yet!)
# Optimized skew: 0.77754 Murphy: 2.69e-16
skew: 0.77754
c8: 16
c7: -16
c6: 8
c4: -4
c2: 2
c1: -2
c0: 1
Y1: -1
Y0: 2722258935367507707706996859454145691648
type: snfs