10-

10^401-1

Open composite · C308

NFS Planning

GNFS Murphy estimate: 3.05e-21
SNFS Murphy score: 1.42e-18
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 1.31632

Identifiers

Target expression: 10^401-1
Target link: FactorDB page
Target ID: 1100000000013095653
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C308
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(1) 16843.26914319.25630835501493582366342771676602359.14135641046765185164159467932114646984359158253.C308

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 1.42e-18
Skew: 1.31632
Selected: Best

n: 67651335538829600599394737734974545793105602870291447369036204491766831517183728663345862626733272722065448818694194642332301567886186592057450717931415412287744473421023539513464479116254549533360556977029095739568035429637827567544016469430762377187088926443749656127134296188072915557260751395212191505329
# 10^401-1, difficulty: 402.51, skewness: 1.04
# cost: 1.85605e+23, est. time: 88383521.89 GHz days (not accurate yet!)
# Optimized skew: 1.31632 Murphy: 1.42e-18
skew: 1.31632
c7: 25
c0: -32
Y1: -1
Y0: 2000000000000000000000000000000000000000000000000000000000
type: snfs