is 2 499601 - 1
has 150395 decimal digits
takes 0.006 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L6FE8F01061676EB9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26759.475371.6418 %131072131072000.01433.3599 %59.489672.5946 %
Target2440.000056.8182 %900014000000.001414.3551 %0.001563.0170 %
Difference+23+59.4753+14.8236 %+122072+11707200+0.0129-10.9952 %+59.4882+9.5776 %

Known prime factors (1 factor, 82.1 bits, 0.01642858% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
49960151020789594100180252858312582.0775106153670038708915
3 × 5 × 53 × 40013 × 373229 × 430081
2010-12-223732294300811,960,4980.00640.0130

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-12-22ANONYMOUSv4_computers2000200000--0.00011.074%
2001-12-22ANONYMOUSv4_computers500001000000--0.00219.452%
2002-06-29ANONYMOUSv4_computers32768327680012--0.00422.117%
2002-09-29ANONYMOUSv4_computers65536655360012--0.00724.762%
2003-05-04ANONYMOUSv4_computers1310721310720030--0.01427.355%
2010-12-22Rob_Deetwopc2582.0770.0090.000%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-05-05ANONYMOUSv4_computers212540.005
2022-03-07LordJuliusManual testing254255
2001-04-01ANONYMOUSv4_computers212560.019
2002-01-15ANONYMOUSv4_computers212570.038
2003-12-13ANONYMOUSv4_computers212580.077


ECM factoring results:
Total ECM effort:12.781 GHz-days
Estimated T-Level:26.435
DigitsB1CompleteFacMiss
201100023.8990.000%
25500003.0284.840%
302500000.28775.049%
3510000000.02297.832%
4030000000.00199.860%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002813.447
250000250000001449.333


Lucas-Lehmer results:
No L-L results for M499601


PRP results:
dateuseridcompidcofactorsres64
2017-09-27Oliver KruseGTX-0
5102078959410018025285831
F454F463E1262442
2017-11-03kkmrkkblmbrbkc4.xlarge
5102078959410018025285831
F454F463E1262442
2020-04-18Oliver KruseAddPrpType5
5102078959410018025285831
349A99ED9A01C44E


CERT results:
No CERT results for M499601


P-1 factor-bounds graph:
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 2000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
258
257
256
255
254
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=26.44 ~= 71-bit
250
260
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Last modified: 2024-02-09T03:30:02+00:00