is 2 1846283 - 1
has 555787 decimal digits
takes 0.100 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
Actual26716.093968.6567%500000283586457012.191010.3816%28.284971.9107%3.2539%
PrimeNet2570.010463.1579%90001600000.00143.0220%0.011864.2713%1.1134%
GPU722610.166465.5738%90001500000.00131.6303%0.167766.1350%0.5612%
Difference+6+15.9275+3.0829%+491000+2835714570+12.1897+8.7513%+28.1172+5.7756%+5.7756%

Known prime factors (3 factors, 138.5 bits, 0.00749981% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18462833692567721.8161
1
-111.514e-137.866e-81.601e-7
1846283721084288491136.06919528
23 × 2441
2008-07-15824416.083e-91.106e-51.954e-5
184628318097137184326346650134572580.582490096512406991416
23 × 109 × 562037284870403
2021-04-13109562037284870403196,8162,408,7514,498,877

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
18462832662652047896653831857.886
1846283668248915613163848708474587411931102.398
184628313049561290265885654173381371202099336116.651
184628348186379384913230592374040329715622205903142138.468
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-11T13:44:05Lisander ViaeneDesktop5000002835864570-
skipped known factor: 3692567
skipped known factor: 72108428849
--12.19--10.382%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:47:00J FeitsmaManual testing??36.069111.12477e-90.2142.40384e-9


ECM factoring results:

Old Calculation Method

Total ECM effort:19.892 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:19.892 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.8410.014%
25500000.80244.846%
302500000.05095.154%
3510000000.00299.771%


ECM Summary

B1B2factorcurvesGHz-days
500005000000292.005
50000500000010.069
50000660000022017.15
50000675000070.551
84000840000010.116


Lucas-Lehmer results:
No L-L results for M1846283


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-04T05:20:05Oliver KruseGTX-0
3692567
72108428849
782630ED49CE8A__no
2017-11-06T19:07:56kkmrkkblmbrbkc4.xlarge
3692567
72108428849
782630ED49CE8A__no
2021-04-13T05:26:57SRJ2877LTOS
3692567
72108428849
1809713718432634665013457
C9AA81A5701376B2no


P-1 factor-bounds graph:
B1 = 500000, B2 = 2835864570 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-04-11T13:44:05+00:00