is 2 725111 - 1
has 218281 decimal digits
takes 0.014 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-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actualunknown150000036134884505.742545.1205%5.742545.1205%
Target2440.000054.5455%120004500000.001016.5665%0.001062.0757%
Difference-440.0000-54.5455%+1488000+3613038450+5.7414+28.5540%+5.7414-16.9552%

Known prime factors (3 factors, 184.0 bits, 0.02537087% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
725111935393191929.801645
3 × 5 × 43
-5431.124e-102.048e-72.947e-7
72511128345774160802461712732271.2641954581723405276
22 × 3 × 7 × 17 × 151 × 619 × 14643943
2014-10-08619146439431,127.00.02310.0432
72511190382508384454433114066572582.9026232322250279918048
25 × 3 × 4177 × 490499 × 31686631
2023-01-04490499316866311,785,8390.06340.0934

4 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2014-10-08alpertronManual testing50000015000000122271.2640.0370.0290.07529.491%
2023-01-04USAFSS6917th_Scty_Sq150000036134884502582.9025.7420.02911.4845.120%


Trial Factoring results:
No TF results for M725111


ECM factoring results:
Total ECM effort:11.336 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002816.358
25000025000000444.978


Lucas-Lehmer results:
No L-L results for M725111


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-27Oliver KruseGTX-3
935393191
2834577416080246171273
CD5F6C97CE2EDD__no
2017-09-28Oliver KruseManual testing
935393191
2834577416080246171273
CD5F6C97CE2EDD__no
2017-11-09kkmrkkblmbrbkc4.large
935393191
2834577416080246171273
CD5F6C97CE2EDD__no
2020-04-20Oliver KruseAddPrpType5
935393191
2834577416080246171273
0BE75D11098327__no
2023-01-06LordJuliusWhiteBox
935393191
2834577416080246171273
9038250838445443311406657
0BE75D11098327B2no


P-1 factor-bounds graph:
B1 = 1500000, B2 = 3613488450 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67.7
ECM T-Level=25.66 ~= 69-bit
250
260
270
280
290
Last modified: 2023-03-25T13:08:14+00:00