2+(odd)

2^1415+1

Open composite · C219

NFS Planning

GNFS Murphy estimate: 4.43e-16
SNFS Murphy score: 7.31e-17
Preferred method: GNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 0.77520

Identifiers

Target expression: 2^1415+1
Target link: FactorDB page
Target ID: 1000000000012151439
Target changed: -
Parent query: Same as target
Parent ID: -
Cofactor token: C219
Imported: Jun 03, 2026, 04:29 PM UTC

Raw pmain126 Factorization

(1,5,283) 11321.12324078836075554184590673081.147760168722381548345968375756228907471260681.360877403289367388748781954459955342833200811.C219

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 7.31e-17
Skew: 0.77520
Selected: Best

n: 712863011287416553684363488990753539772915017634916779134384869382710336620193210632758077072357493376334507684651644988243934866452396130351335090401525555194879187016097853822555019952851287888990296505902978888593841
# 2^1415+1, difficulty: 340.77, skewness: 0.71
# cost: 4.4992e+21, est. time: 2142475.05 GHz days (not accurate yet!)
# Optimized skew: 0.77520 Murphy: 7.31e-17
skew: 0.77520
c8: 16
c6: -8
c4: 4
c2: -2
c0: 1
Y1: -1
Y0: 2787593149816327892691964784081045188247552
type: snfs