2^1367-1

Open composite · C375

NFS Planning

GNFS Murphy estimate: 3.97e-25
SNFS Murphy score: 8.90e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 0.95626

Identifiers

Target expression: 2^1367-1
Target link: FactorDB page
Target ID: 1000000000000001367
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C375
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

10937.65617.232391.2561759.29769631481404601. C375

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 8.90e-19
Skew: 0.95626
Selected: Best

n: 253255249353525417303663030998087724225812336639737771406411150943751516085876283352065752885140945394549835872596646006540283882505687485141623307131044421253975330453884318895558788585457068653967832762362703363610509461214665519882965226033461214111593764140010537964611086085680612185630049185441966596687217558540982775564667354974283082877338509596080619396639700930327
# 2^1367-1, difficulty: 411.51, skewness: 1.22
# cost: 3.10005e+23, est. time: 147621361.45 GHz days (not accurate yet!)
# Optimized skew: 0.95626 Murphy: 8.90e-19
skew: 0.95626
c7: 1
c0: -4
Y1: -50216813883093446110686315385661331328818843555712276103168
Y0: 1
type: snfs