is 2 2797507 - 1
has 842134 decimal digits
takes 0.216 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
Actual26710.621667.1642%2880002438389801.51837.5727%12.139969.6507%
Target2630.570565.0794%150002600000.00321.7894%0.573765.7042%
Difference+4+10.0511+2.0848%+273000+243578980+1.5151+5.7833%+11.5662+3.9465%

Known prime factors (3 factors, 161.6 bits, 0.00577597% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
279750754215685671032.336969
3 × 17 × 19
-17192.474e-101.916e-63.875e-6
2797507794504297030811446.17514200220
22 × 5 × 19 × 37369
2014-02-0519373695.498e-60.00020.0004
2797507101669464775532719069286412683.0721817144063902837760
210 × 5 × 4799 × 124303 × 594959
2023-01-21124303594959830,5910.01680.0283

4 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2023-01-21USAFSS6917th_Scty_Sq2880002438389802683.0721.5180.4323.0377.573%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-02-05TJAOIManual testing??46.175142.14695e-61.0069.99425e-6


ECM factoring results:
Total ECM effort:0.313 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.313


Lucas-Lehmer results:
No L-L results for M2797507


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-21Oliver KruseGTX-3
5421568567
79450429703081
03D264816853F0__no
2017-12-06kkmrkkblmbrbkc4.xlarge
5421568567
79450429703081
03D264816853F0__no
2023-01-22LordJuliusWhiteBox
5421568567
79450429703081
10166946477553271906928641
03D264816853F048no


P-1 factor-bounds graph:
B1 = 288000, B2 = 243838980 (P-1 stage 2)
B1 = 288000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
2
this exponent TF target: 63
TF double-checked to: 67.7
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
290
Last modified: 2023-03-25T13:08:14+00:00