2LM

2^2938+1 L

Open composite · C389 · component L

NFS Planning

GNFS Murphy estimate: 6.12e-26
SNFS Murphy score: 1.04e-19
Preferred method: SNFS
SNFS possible: Yes
SNFS degree: 8
SNFS skew: 1.26313

Identifiers

Target expression: 2^1469+1-2^735
Target value: 16332912310228701097717316802721870128775022868221080314403305773060286348016616983179506327297989866534783694332203603069900790667845848833290412518197996936687248053648088716197201382174837843764891002485593142663759858290113890287562453002701554693765665282276430193490859302039314456881662615710570985262446106903272848488154861354379193732711570851957009035302775230606416438677776292178795470126836395569107426593398854187349568959545345
Target link: FactorDB page
Target ID: 1100000000003862246
Target changed: -
Parent query: 2^2938+1
Parent ID: -
Cofactor token: C389
Imported: Jun 03, 2026, 04:30 PM UTC

Raw pmain126 Factorization

(2,26L,226M) 1886197.13403114869. C389

SNFS Polynomial

Polynomial

Degree: 8
Murphy: 1.04e-19
Skew: 1.26313
Selected: Best

n: 38569762403855923583294876189277530556614771033630489788196879489066494374292050484313384309001874141177883023095551506899337079290160099670834911490386111855855162992807151099080264665160121921090136138552582504231576628452501176681196714302935900887617465750521318258144404012138976379743734669162842601051080447798260251535102655295194081357929917699012236698878762993904182255626456557
# 2^2938+1 Aurifeuillian L, difficulty: 443.12, skewness: 1.30
# cost: 1.78264e+24, est. time: 848878155.35 GHz days (not accurate yet!)
# Optimized skew: 1.26313 Murphy: 1.04e-19
skew: 1.26313
c8: 1
c4: -4
c0: 8
Y1: -1
Y0: 24519928653854221733733552434404946937899825954937634816
type: snfs