10-

10^445-1

Open composite · C257

NFS Planning

GNFS Murphy estimate: 2.77e-18
SNFS Murphy score: 1.53e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.32574

Identifiers

Target expression: 10^445-1
Target link: FactorDB page
Target ID: 1100000000013095694
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C257
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1,5,89) 215590331921.977941422745951.1845510259377121.531064192377686524247549698671797855428713498203833561.C257

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.53e-17
Skew: 0.32574
Selected: Best

n: 43555323713358910419290615915008860029206298198510635938626254115884285880253839672607126563092607749031186779320293833732696869631805772336315720620470216345826733958672564007049434053818816137587475207144633587865392427068447670010968995099545914800680641
# 10^445-1, difficulty: 356.00, skewness: 0.32
# cost: 1.16713e+22, est. time: 5557757.78 GHz days (not accurate yet!)
# Optimized skew: 0.32574 Murphy: 1.53e-17
skew: 0.32574
c8: 10000
c6: 1000
c4: 100
c2: 10
c0: 1
Y1: -1
Y0: 100000000000000000000000000000000000000000000
type: snfs