is 2 5022607 - 1
has 1511956 decimal digits
takes 0.696 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRPD799719AB1208E__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual273380.846968.4932%560000313600000.44983.7179%381.296769.6646%1.1714%
PrimeNet2610.061262.2951%220004500000.00913.3157%0.070363.5453%1.2502%
GPU722651.452664.6154%340007000000.01412.4178%1.466765.4709%0.8555%
Difference+8+379.3943+3.8778%+526000+30660000+0.4357+1.3001%+379.8300+4.1936%+4.1936%

Known prime factors (1 factor, 80.7 bits, 0.00160624% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
502260719306016318101157543054472580.675192191189934840189
3 × 331 × 887 × 4723 × 46200073
2021-10-1847234620007388,7370.50680.9449

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-02-07T00:00:00ANONYMOUSv4_computers1500004000000---0.072--1.906%
2021-04-03T00:40:16Dylan Delgadodesktoplinux56000031360000---0.450--3.718%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-10-18T15:54:18ATH5960X25000009000000027P-12580.6751.703


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:39:07Mark RoseManual testing21263--0.318--
2014-12-15T11:36:00VictordeHollanderManual testing263264--0.391--
2014-12-15T11:36:00VictordeHollanderManual testing264265--0.744--
2015-07-27T22:27:00snme2pm1Manual testing265266--1.488--
2016-05-15T16:59:10Gordon SpenceManual testing266267--2.976--
2018-06-08T00:09:24ramgeisManual testing267268--5.951--
2021-02-01T12:43:34TJAOIManual testing268269--11.90--
2021-03-31T18:48:31-Anonymous-Manual testing269270--23.81--
2021-03-31T18:48:31-Anonymous-Manual testing270271--47.61--
2021-04-02T16:28:18-Anonymous-Manual testing271272--95.22--
2021-04-04T19:23:31-Anonymous-Manual testing272273--190.4--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.897 GHz-days
Estimated T-Level:0.450
DigitsB1CurvesCompleteFacMiss
20110009 / 1000.09091.352%
25500009 / 2800.03296.831%

New Calculation Method

Total ECM effort:1.897 GHz-days
Estimated T-Level:0.450
DigitsB1CompleteFacMiss
20110000.29074.802%
25500000.02697.410%
302500000.00299.839%


ECM Summary

B1B2factorcurvesGHz-days
50000500000091.897


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-02T00:00:00ANONYMOUSv4_computers41A097D750AE6D__0.696
2000-04-05T00:00:00kraDenv4_computers5806AEACBF1E40__0.696


PRP results:
dateuseridcompidcofactorsres64PRP
2021-10-18T23:10:01ATHec2-PRPCF
1930601631810115754305447
D799719AB1208E__no


P-1 factor-bounds graph:
B1 = 2500000, B2 = 90000000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 560000, B2 = 31360000 (P-1 stage 2)
B1 = 560000 (P-1 stage 1)
B1 = 150000, B2 = 4000000 (P-1 stage 2)
B1 = 150000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-10-18T23:10:01+00:00