is 2 15144469 - 1
has 4558940 decimal digits
takes 7.595 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L8DDD6C6F863175DCdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27263.147466.6667%17000021675000.20282.2352%63.350267.4117%0.7451%
PrimeNet2650.481763.0769%6500020000000.12394.1487%0.605764.6087%1.5318%
GPU722697.883265.2174%10000026000000.17182.9975%8.055066.2600%1.0426%
Difference+3+55.2642+1.4493%+70000-432500+0.0310-0.7624%+55.2952+1.1517%-0.2976%

Known prime factors (1 factor, 84.0 bits, 0.00055456% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
15144469191415967030860160275834792683.985631966584734202831
3 × 56713 × 598613 × 6205033
2022-11-055986136205033162,6950.65750.8860

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-12-16T00:00:00ANONYMOUSv4_computers1700002167500---0.203--2.235%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2022-11-05T18:50:43ATHec2-P_110000002900000027P-12683.9852.193


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-12-31T00:00:00Net_Forcev4_computers21257--0.001--
2000-12-31T00:00:00Net_Forcev4_computers21258--0.003--
2001-04-08T00:00:00ANONYMOUSv4_computers21265--0.482--
2014-05-14T07:11:00NesowaManual testing265266--0.493--
2014-05-14T07:11:00NesowaManual testing266267--0.987--
2017-12-24T18:15:22ramgeisManual testing267268--1.974--
2017-12-24T18:15:22ramgeisManual testing268269--3.947--
2021-06-30T12:29:04lycornManual testing269270--7.895--
2021-09-03T15:09:58SRBaseManual testing270271--15.79--
2021-10-09T10:08:18-Anonymous-Manual testing271272--31.58--


ECM factoring results:
Total ECM effort:0.763 GHz-days
Estimated T-Level:0.192
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.763


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2003-01-25T00:00:00ANONYMOUSv4_computers8DDD6C6F863175DC7.595
2005-11-13T00:00:00WileECoyotev4_computers8DDD6C6F863175DC7.595


PRP results:
No PRP results for M15144469


P-1 factor-bounds graph:
B1 = 1000000, B2 = 29000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 170000, B2 = 2167500 (P-1 stage 2)
B1 = 170000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
272
271
270
269
268
267
266
265
258
257
250
260
270
280
290
2100
Last modified: 2022-11-05T18:50:43+00:00