is 2 33669887 - 1
has 10135646 decimal digits
takes 39.843 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LFA3744022FF84EDBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27114.199063.3803%60000076000001.68394.3665%15.882964.9793%
Target27114.199063.3803%240000560000005.62443.8353%19.823464.7848%
Difference---+360000-48400000-3.9405+0.5311%-3.9405+0.1945%

Known prime factors (1 factor, 71.1 bits, 0.00021107% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3366988724737693844452328364632271.06736735635383113
3 × 641 × 40751 × 468781
2014-12-234075146878115.7760.10990.1423

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-23ANONYMOUSv4_computers3800007600000---1.327--4.150%
2014-12-23riccardo ubertiXeon12C6000006000002271.0671.03079.692.0592.086%
unknown6000007600000---1.684--4.366%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-21markrv4_computers21263--0.047--
2003-08-31markrv4_computers21264--0.106--
2003-12-13ANONYMOUSv4_computers21268--1.770--
2012-11-27krackerManual testing268269--1.776--
2013-06-01GrunwalderGIMPManual testing269270--3.551--
2013-06-01GrunwalderGIMPManual testing270271--7.102--


ECM factoring results:
No ECM results for M33669887


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-02-07ANONYMOUSv4_computersFA3744022FF84EDB39.84
2014-12-17Architects CubedR720_307C2C75DEC2B8B0E39.84


PRP results:
No PRP results for M33669887


P-1 factor-bounds graph:
B1 = 600000, B2 = 7600000 (P-1 stage 2)
B1 = 380000, B2 = 7600000 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
B1 = 380000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
271
270
269
268
264
263
this exponent TF target: 71
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00