is 2 32147989 - 1
has 9677509 decimal digits
takes 35.385 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4BB367A932492986double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual274119.007966.2162 %37500092812501.37293.1637 %120.380967.2850 %
Target27114.871264.7887 %220000350000003.37543.7624 %18.246666.1135 %
Difference+3+104.1368+1.4275 %+155000-25718750-2.0025-0.5987 %+102.1343+1.1715 %

Known prime factors:
No known factors for M32147989

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2006-03-28Dan Moodyv4_computers3750009281250--1.3734.288%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-08-31Net_Forcev4_computers212560.000
2005-12-12ANONYMOUSv4_computers212680.930
2012-09-30apsenManual testing2682705.579
2018-12-19ramgeisManual testing2702717.438
2019-12-06ANONYMOUSManual testing27127344.63
2020-03-24ANONYMOUSManual testing27327459.51


ECM factoring results:
No ECM results for M32147989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-04-14Dan Moodyv4_computers4BB367A93249298635.39
2014-06-09Mathematicae KUHMANNGIMPS-154BB367A93249298636.52


PRP results:
No PRP results for M32147989


CERT results:
No CERT results for M32147989


P-1 factor-bounds graph:
B1 = 375000, B2 = 9281250 (P-1 stage 2)
B1 = 375000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
274
273
271
270
268
256
this exponent TF target: 71
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00