2^1429-1

Open composite · C403

NFS Planning

GNFS Murphy estimate: 9.43e-27
SNFS Murphy score: 2.08e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.86296

Identifiers

Target expression: 2^1429-1
Target link: FactorDB page
Target ID: 1000000000000001429
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C403
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

1757766958557127850108708353. C403

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 2.08e-19
Skew: 0.86296
Selected: Best

n: 8450891136825325435370068413980378464979343967048606572156444542269942985213845503299741515021303783709128281193966451481522382590867633540529168436838501201166276006710698526100462110851345040931034689493036179102032518059914393662781534207084647738388594670500558611544641507301862597031751410832934198199243162024044898551112499766783414406177089914434077898882584238997037110005400239175867113727487
# 2^1429-1, difficulty: 430.17, skewness: 1.10
# cost: 8.79086e+23, est. time: 418612574.49 GHz days (not accurate yet!)
# Optimized skew: 0.86296 Murphy: 2.08e-19
skew: 0.86296
c7: 1
c0: -2
Y1: -25711008708143844408671393477458601640355247900524685364822016
Y0: 1
type: snfs