2LM

2^2774+1 M

Open composite · C261 · component M

Target FactorDB

NFS Planning

GNFS Murphy estimate
1.62e-18
SNFS Murphy score
4.73e-19
Preferred method
GNFS
SNFS possible
Yes
SNFS degree
8
SNFS skew
0.77518

Identifiers

Target expression
2^1387+1+2^694
Target value
3377567102387465838194817161483750504129906689048778555046527505938063359016262072445429458606977698392260440938232335677232122237912427637350662863946859977285287334134576433591818720893316796464821576322326934647415507619161887849116971826847880607938068220106531935899855000562720477444440855972025334092429313693942993691608239404610893334933654659406550681536105252309491282746482455278638515053593665465967706113
Target link
FactorDB page
Target ID
1100000000001251216
Target changed
-
Parent query
2^2774+1
Parent ID
-
Cofactor token
C261
Imported
Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(38M,146L) 8410769.4478689577.35191330676636122248410367493025630850444200064528757.1068915744602517262196079731781849153647668923793968734330009.C261

SNFS Polynomial

Degree
8
Murphy
4.73e-19
Skew
0.77518
Selected
Best
n: 480430226663374856220047692371308748082190356434943352218979645908562838488865365870354474205418652057763075467582923909885857223116843692983493935395936053580820182955070116712722506503919943263519043925768781804290226184642963007601196089822787024755841332749
# 2^2774+1 Aurifeuillian M, difficulty: 417.53, skewness: 0.77
# cost: 4.35227e+23, est. time: 207251044.77 GHz days (not accurate yet!)
# Optimized skew: 0.77518 Murphy: 4.73e-19
skew: 0.77518
c8: 8
c4: 4
c0: 1
Y1: -1
Y0: 11972621413014756705924586149611790497021399392059392
type: snfs