is 2 1525333 - 1
has 459171 decimal digits
takes 0.068 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
Actual26719.480368.6567%500000150000000.08354.9584%19.563870.2108%1.5541%
PrimeNet2570.012663.1579%65001100000.00082.4128%0.013464.0468%0.8889%
GPU722610.201465.5738%6500550000.00061.0135%0.202065.9227%0.3489%
Difference+6+19.2789+3.0829%+493500+14945000+0.0830+3.9449%+19.3619+4.2882%+4.2882%

Known prime factors (4 factors, 166.7 bits, 0.01092588% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
152533345759991825.44815
3 × 5
-352.940e-122.014e-73.954e-7
152533379317316011032.8852600
23 × 52 × 13
2008-07-1525255.862e-101.619e-63.295e-6
152533319417245036731340.820636492
22 × 3 × 29 × 31 × 59
2008-07-1531591.699e-72.107e-64.086e-6
15253332091382509750427887132167.50368554948648932
22 × 32 × 1904304129137
2017-11-289190430412913735.0566,719.712,550

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
15253333629559666761755911858.333
1525333888532958125559469432066.268
1525333154012376062191746704732373.705
152533395701644823736992361217815832892.951
15253337047604942494509769482724457433099.153
1525333165882847423661594956206821951331100.388
152533340608886657355426722368773144284933108.323
15253337590797605161127772241669566630090438338125.836
15253331858262287960604410616754557763518725435941133.771
1525333322098789581573297222652251524124673877124943141.208
152533314739237712363687846748892025873681359495170529875
9
51166.656
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:15:53alpertronManual testing5000001500000012-
skipped known factor: 45759991
skipped known factor: 7931731601
skipped known factor: 1941724503673
--0.084--4.958%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T10:03:00J FeitsmaManual testing??40.820137.38295e-80.1511.63517e-7
2008-07-15T10:03:00J FeitsmaManual testing??32.885102.11101e-100.1514.67546e-10


ECM factoring results:

Old Calculation Method

Total ECM effort:14.007 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:14.007 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110009.6540.006%
25500000.89340.933%
302500000.05694.522%
3510000000.00399.737%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025013.95
50000500000010.056


Lucas-Lehmer results:
No L-L results for M1525333


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T14:09:13Oliver KruseGTX-1
45759991
7931731601
1941724503673
2CBA515D090EF0__no
2017-10-29T23:46:29kkmrkkblmbrbkc4.xlarge
45759991
7931731601
1941724503673
2CBA515D090EF0__no
2017-11-30T17:00:07kkmrkkblmbrbkc4.xlarge
45759991
7931731601
1941724503673
209138250975042788713
23ACB512492774__no
2017-12-01T09:11:22Oliver KruseThreadripper
45759991
7931731601
1941724503673
209138250975042788713
23ACB512492774__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
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1010
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TF factor-bounds graph:
267
2
220
230
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250
260
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2100
Last modified: 2019-06-21T09:33:54+00:00