is 2 245383 - 1
has 73868 decimal digits
takes 0.001 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
Actualunknown30000000101202470268904,486.311472.9524%4,486.311472.9524%72.9524%
PrimeNet2400.000055.0000%2600650000.000013.9775%0.000061.2899%6.2899%
GPU722440.000059.0909%45001100000.000110.1310%0.000163.2354%4.1445%
Difference-440.0000-59.0909%+29995500+10120246916890+4,486.3113+62.8213%+4,486.3113+9.7170%+9.7170%

Known prime factors (2 factors, 147.0 bits, 0.05991352% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2453831006560614495291546.516205099908
22 × 3 × 13 × 19 × 69197
-19691977.333e-53.082e-55.729e-5
245383179418846821804224991230450279131100.5013655893986580248529670565
5 × 11 × 2657 × 3761 × 30529 × 217883045651
2021-05-02305292178830456517.069e+1196.583180.39

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
24538318059594470899156993733848124433389708613543945147.018
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-07-29T05:34:04Oliver KruseOllaptop30000000300000000024-
skipped known factor: 100656061449529
--1.561--43.981%
2022-04-13T00:49:17Oliver KruseThreadripper-PC3000000010120247026890-
skipped known factor: 100656061449529
skipped known factor: 1794188468218042249912304502791
--4,486--63.089%


Trial Factoring results:
No TF results for M245383


ECM factoring results:

Old Calculation Method

Total ECM effort:10.241 GHz-days
Estimated T-Level:27.195
DigitsB1CurvesCompleteFacMiss
2011000585 / 1005.8500.280%
2550000555 / 2801.98213.729%
30250000281 / 6400.43964.442%

New Calculation Method

Total ECM effort:10.241 GHz-days
Estimated T-Level:27.195
DigitsB1CompleteFacMiss
201100032.2620.000%
25500004.2131.480%
302500000.41865.837%
3510000000.03396.760%
4030000000.00299.786%


ECM Summary

B1B2factorcurvesGHz-days
110001100000300.039
5000050000002741.637
250000250000002477.379
25000036239257140.481
25000038500000140.493
2500003850000060.211


Lucas-Lehmer results:
No L-L results for M245383


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T06:37:13Oliver KruseDoppelherz
100656061449529
40CD45FD08A057__no
2017-09-22T10:02:59Oliver KruseManual testing
100656061449529
40CD45FD08A057__no
2017-10-12T17:29:51kkmrkkblmbrbkc4.xlarge40CD45FD08A057__no
2020-04-17T20:13:22Oliver KruseAddPrpType5
100656061449529
52000D9970BBF9__no
2021-05-02T03:50:34ATHec2-PRPCF
100656061449529
1794188468218042249912304502791
52000D9970BBF9A4no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 10120247026890 (P-1 stage 2)
B1 = 30000000, B2 = 3000000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
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108
100
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1010
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TF factor-bounds graph:
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2110
Last modified: 2022-05-24T03:34:32+00:00