is 2 5049689 - 1
has 1520108 decimal digits
takes 0.700 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP62AA7940B27AD55Cverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272189.384768.0556%30000094500000.16052.9511%189.545268.9983%0.9427%
PrimeNet2610.060862.2951%220005000000.00973.4039%0.070563.5785%1.2834%
GPU722651.444864.6154%340007000000.01412.4200%1.458965.4717%0.8563%
Difference+7+187.9399+3.4402%+266000+8750000+0.1464+0.5311%+188.0862+3.5266%+3.5266%

Known prime factors (1 factor, 74.8 bits, 0.00148199% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5049689337113814246888140110172374.8363337966102931172
22 × 33 × 599 × 2753 × 18742397
2021-10-302753187423971,468.10.20580.3833

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-06-11T00:00:00ANONYMOUSv4_computers25000306250---0.008--0.648%
2009-08-09T21:24:00harleeP4_260055000907500---0.020--1.154%
2017-03-07T04:17:28Squeeky_Squirreli5-5250U_1600300000945000012---0.160--2.951%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-10-30T20:19:28ATH5960X25000008750000027P-12374.8361.676


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-01-27T00:00:00ANONYMOUSv4_computers21261--0.061--
2016-02-23T16:39:07Mark RoseManual testing261263--0.255--
2014-12-17T21:25:00VictordeHollanderManual testing263264--0.389--
2014-12-17T21:25:00VictordeHollanderManual testing264265--0.740--
2015-07-30T21:28:00snme2pm1Manual testing265266--1.480--
2016-05-19T12:46:47Gordon SpenceManual testing266267--2.960--
2018-06-11T12:29:27ramgeisManual testing267268--5.919--
2020-12-21T16:08:26TJAOIManual testing268269--11.84--
2021-04-01T12:54:16-Anonymous-Manual testing269270--23.68--
2021-04-01T12:54:16-Anonymous-Manual testing270271--47.35--
2021-04-03T17:56:53-Anonymous-Manual testing271272--94.71--


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)
1998-12-06T00:00:00ANONYMOUSv4_computers27A373C04BB273__0.700
2000-08-10T00:00:00ANONYMOUSv4_computers2AB7C784CB9144__0.700


PRP results:
dateuseridcompidcofactorsres64PRP
2021-10-31T01:35:38ATHec2-PRPCFDC
33711381424688814011017
62AA7940B27AD55Cno


P-1 factor-bounds graph:
B1 = 2500000, B2 = 87500000 (P-1 stage 2)
B1 = 2500000 (P-1 stage 1)
B1 = 300000, B2 = 9450000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 55000, B2 = 907500 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
B1 = 25000, B2 = 306250 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
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TF factor-bounds graph:
272
271
270
269
268
267
266
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250
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270
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2100
Last modified: 2021-10-31T01:35:38+00:00