is 2 2453573 - 1
has 738600 decimal digits
takes 0.170 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDD709911231CCB53double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26948.658368.1159%37300004140300002.62349.0674%51.281771.0070%2.8911%
PrimeNet2590.031362.7119%100001800000.00192.5290%0.033263.6549%0.9430%
GPU722630.650565.0794%100001600000.00181.3337%0.652365.5451%0.4658%
Difference+6+48.0079+3.0366%+3720000+413870000+2.6216+7.7336%+50.6294+5.4619%+5.4619%

Known prime factors:
No known factors for M2453573

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-14T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.188%
2003-10-31T00:00:00Team Prime Ribv4_computers15000232500---0.003--0.672%
2010-12-22T11:37:00Jocelyn LaroucheManual testing2000020000---0.002--0.220%
2011-01-19T21:08:00Oscar Östlin950001947500---0.020--2.104%
2014-02-09T05:17:00mikrMSI310282243439508---0.533--6.299%
2021-06-17T00:27:15Dylan Delgadolaptop-ryzen737003730000414030000---2.623--9.067%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-08-07T00:00:00ANONYMOUSv4_computers21259--0.031--
2016-02-23T16:29:14Mark RoseManual testing259260--0.031--
2009-01-15T20:08:00Sturle Sundeczerny.ifi260261--0.063--
2012-06-07T11:43:00Sebastian HornbostelManual testing261262--0.125--
2013-12-04T21:13:00Jerry HallettManual testing262263--0.400--
2015-03-03T21:37:00VictordeHollanderManual testing263264--0.800--
2015-03-03T21:37:00VictordeHollanderManual testing264265--1.523--
2015-10-25T20:35:05ramgeisManual testing265266--3.046--
2017-07-14T10:08:13Gordon SpenceManual testing266267--6.091--
2019-07-17T09:51:52TJAOIManual testing267268--12.18--
2021-06-03T11:40:09TJAOIManual testing268269--24.37--


ECM factoring results:

Old Calculation Method

Total ECM effort:15.532 GHz-days
Estimated T-Level:22.911
DigitsB1CurvesCompleteFacMiss
2011000163 / 1001.63019.433%
2550000163 / 2800.58255.812%

New Calculation Method

Total ECM effort:15.532 GHz-days
Estimated T-Level:22.911
DigitsB1CompleteFacMiss
20110006.3560.174%
25500000.58755.583%
302500000.03796.365%
3510000000.00299.827%


ECM Summary

B1B2factorcurvesGHz-days
500005000070.375
50000500000014213.02
50000520000070.653
50000675000070.736
50000700000070.750


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-11-15T03:19:13MadPooManual testingDD709911231CCB530.170


PRP results:
No PRP results for M2453573


P-1 factor-bounds graph:
B1 = 3730000, B2 = 414030000 (P-1 stage 2)
B1 = 3102822, B2 = 43439508 (P-1 stage 2)
B1 = 3730000 (P-1 stage 1)
B1 = 3102822 (P-1 stage 1)
B1 = 95000, B2 = 1947500 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 15000, B2 = 232500 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-05-01T11:58:45+00:00