is 2 17504141 - 1
has 5269272 decimal digits
takes 9.968 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275437.148566.6667%1000000300000002.13033.8401%439.278870.5067%8.9683%
PrimeNet2650.416861.5385%8000024000000.17044.5488%0.587266.0872%4.5488%
GPU722696.820563.7681%12000034000000.24663.3524%7.067167.1205%3.3524%
Difference+6+430.3280+2.8986%+880000+26600000+1.8837+0.4877%+432.2116+3.3862%+3.3862%

Known prime factors (1 factor, 148.3 bits, 0.00084698% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1750414142631548996643717453019541971028922695240739945148.25712177561011603973440633145599955154239
3 × 191 × 307 × 593 × 839 × 3593 × 3989 × 4051 × 6691 × 152429 × 2349679
1524292349679-7.842e+90.22470.2561

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-01-23T15:29:23Christoph ZengerManual testing10000003000000012---2.130--3.840%
2020-03-14T17:19:57mat2022Manual testing152429152429---0.126--0.565%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-02-11T00:00:00Net_Forcev4_computers?258--0.002--
2001-03-17T00:00:00Net_Forcev4_computers?259--0.002--
2001-09-22T00:00:00ANONYMOUSv4_computers?265--0.213--
2020-03-09T14:34:25Christoph ZengerManual testing265275--436.7--


ECM factoring results:
Total ECM effort:34.637 GHz-days
Estimated T-Level:2.000
DigitsB1CurvesCompleteFacMiss
201100040 / 1000.40066.897%
255000040 / 2800.14386.666%

ECM Summary

B1B2factorcurvesGHz-days
5000050000004034.64


Lucas-Lehmer results:
Exponent "17504141" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2019-02-19T00:28:37M910888072
426315489966437174530195419710289226952407399
BDA827E6F5BE5A__no
2019-03-30T21:12:15ANONYMOUS
426315489966437174530195419710289226952407399
BDA827E6F5BE5A7Cno


P-1 factor-bounds graph:
B1 = 1000000, B2 = 30000000 (stage 2)
B1 = 1000000 (stage 1)
B1 = 152429 (stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
275
265
259
258
250
260
270
280
290
2100
2110
2120
2130
2140
2150
Last modified: 2020-03-14T17:19:57+00:00