is 2 1934671 - 1
has 582395 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
Actual26715.358668.6567%500000150000000.10155.1026%15.460170.2561%1.5993%
PrimeNet2580.019863.7931%80001400000.00122.4630%0.021064.6849%0.8918%
GPU722620.317666.1290%8000900000.00101.1512%0.318566.5189%0.3899%
Difference+5+15.0411+2.5277%+492000+14910000+0.1005+3.9515%+15.1416+3.7371%+3.7371%

Known prime factors (2 factors, 116.5 bits, 0.00602180% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1934671176090852413511444.0014550925
3 × 52 × 60679
-25606791.270e-60.00030.0005
193467166812158208942446532392272.5011726705941447989
1726705941447989
2019-02-1311726705941447989638.687,400,23013,821,569

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
193467111765009890598964969832791761888588936116.502
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:41:00alpertronManual testing5000001500000012-
skipped known factor: 17609085241351
--0.101--5.103%


Trial Factoring results:
No TF results for M1934671


ECM factoring results:

Old Calculation Method

Total ECM effort:21.026 GHz-days
Estimated T-Level:24.589
DigitsB1CurvesCompleteFacMiss
2011000257 / 1002.5707.555%
2550000257 / 2800.91839.872%

New Calculation Method

Total ECM effort:21.026 GHz-days
Estimated T-Level:24.589
DigitsB1CompleteFacMiss
20110009.0770.011%
25500000.80644.642%
302500000.05095.121%
3510000000.00299.770%


ECM Summary

B1B2factorcurvesGHz-days
500005000000241.668
50000500000030.209
50000670000070.553
50000700000070.565
50000750000021618.03


Lucas-Lehmer results:
No L-L results for M1934671


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T01:53:46Oliver KruseGTX-0
17609085241351
550A947CA02957__no
2017-11-15T12:33:40kkmrkkblmbrbkc4.xlarge
17609085241351
550A947CA02957__no
2019-02-14T21:01:47Julian112zapserver1
17609085241351
6681215820894244653239
7E0924A4B6D300BAno
2019-02-14T21:16:06ATHec2-PRPCFDC
17609085241351
6681215820894244653239
7E0924A4B6D300BAno


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
109
1010
1011
1012
1013
1014
1015
1016
TF factor-bounds graph:
267
240
250
260
270
280
290
2100
Last modified: 2022-03-17T11:24:04+00:00