is 2 3628267 - 1
has 1092218 decimal digits
takes 0.381 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26816.427967.6471%1000001303648501.09615.3932%17.524069.3919%1.7449%
PrimeNet2600.042363.3333%160003200000.00503.0732%0.047364.4602%1.1268%
GPU722640.981065.6250%220004000000.00652.0340%0.987566.3242%0.6992%
Difference+4+15.4469+2.0221%+78000+129964850+1.0896+3.3592%+16.5365+3.0677%+3.0677%

Known prime factors (2 factors, 125.6 bits, 0.00346067% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
36282678164621029420070331859.502112514060148
22 × 3 × 7 × 103 × 281 × 46279
-281462790.03540.00040.0007
3628267769278552876816377932066.06010601184434288
24 × 7 × 37 × 1733 × 1476169
2019-09-19173314761695.84290.01250.0229

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
36282676280867850299894541387776195196459816938125.562
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-03-19T09:21:33Lisander ViaeneManual testing100000100000-
skipped known factor: 816462102942007033
--0.015--0.881%
2022-03-20T23:03:36Lisander ViaeneDesktop10000038206140-
skipped known factor: 816462102942007033
skipped known factor: 76927855287681637793
--0.331--4.497%
2022-05-20T02:44:07Jocelyn LaroucheManual testing100000130364850-
skipped known factor: 816462102942007033
skipped known factor: 76927855287681637793
--1.096--5.393%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-09-19T11:52:03TJAOIManual testing266267*66.060201.7720.7753.604
2022-03-13T12:30:45Jocelyn LaroucheManual testing267268--8.238--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.445 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.445 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.445


Lucas-Lehmer results:
No L-L results for M3628267


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-10T20:48:02Oliver KruseGTX-3
816462102942007033
3760C666C466D9__no
2017-12-18T20:54:24kkmrkkblmbrbkc4.xlarge
816462102942007033
3760C666C466D9__no
2019-09-20T08:51:26mnd9office
816462102942007033
76927855287681637793
3760C666C466D96Cno


P-1 factor-bounds graph:
B1 = 100000, B2 = 130364850 (P-1 stage 2)
B1 = 100000, B2 = 38206140 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
250
260
270
280
290
2100
Last modified: 2022-05-20T02:44:07+00:00