5^508+1

Open composite · C332

NFS Planning

GNFS Murphy estimate: 1.24e-22
SNFS Murphy score: 4.90e-17
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 7
SNFS skew: 2.51064

Identifiers

Target expression: 5^508+1
Target link: FactorDB page
Target ID: 1000000000016637061
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C332
Imported: Jun 03, 2026, 04:31 PM UTC

Raw pmain126 Factorization

(4) 678237913.716754837761. C332

SNFS Polynomial

Polynomial

Degree: 7
Murphy: 4.90e-17
Skew: 2.51064
Selected: Best

n: 39213460879678132076734529019097174708269171703853915303081902664666464115339562048351715231634109065409749200131526210504582557923520244188333631851944634912546013045844429505906372866123384625153326525455715107861607921940169214057079242976271796187390425047068791765088061352292156990361388189696217205564466304505455351232865657
# 5^508+1, difficulty: 357.17, skewness: 1.99
# cost: 1.25478e+22, est. time: 5975142.62 GHz days (not accurate yet!)
# Optimized skew: 2.51064 Murphy: 4.90e-17
skew: 2.51064
c7: 1
c0: 125
Y1: -1
Y0: 1058791184067875423835403125849552452564239501953125
type: snfs