is 2 1929043 - 1
has 580700 decimal digits
takes 0.105 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
Actual26715.403568.6567%500000150000000.10155.1008%15.504970.2555%1.5988%
PrimeNet2570.010063.1579%90001700000.00143.0955%0.011464.2983%1.1404%
GPU722610.159265.5738%110001700000.00151.8146%0.160866.1985%0.6247%
Difference+6+15.2442+3.0829%+489000+14830000+0.0999+3.2862%+15.3441+4.0570%+4.0570%

Known prime factors (2 factors, 105.3 bits, 0.00545793% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1929043312504967928.21981
34
-81811.886e-116.372e-61.297e-5
19290431582372397522533075378332477.06641014440775102812
22 × 3 × 2663 × 593171 × 2163737
2020-11-04593171216373725,1810.05340.0950

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
19290434944992338694900804775135291651132105.286
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:19:07alpertronManual testing5000001500000012-
skipped known factor: 312504967
--0.101--5.101%


Trial Factoring results:
No TF results for M1929043


ECM factoring results:

Old Calculation Method

Total ECM effort:19.844 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:19.844 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.8010.015%
25500000.79745.068%
302500000.04995.190%
3510000000.00299.774%


ECM Summary

B1B2factorcurvesGHz-days
50000490000070.483
500005000000342.363
50000500000020.139
50000660000021516.86


Lucas-Lehmer results:
No L-L results for M1929043


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T00:50:36Oliver KruseGTX-0
312504967
52F75DF730885D__no
2017-11-10T13:01:03kkmrkkblmbrbkc4.xlarge
312504967
52F75DF730885D__no
2020-11-04T06:15:25ATHec2-PRPCF
312504967
158237239752253307537833
48BFC02AACE7B60Fno


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
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2022-02-17T11:38:03+00:00