is 2 233747 - 1
has 70365 decimal digits
takes 0.001 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
Actualunknown30000000100708329922204,464.407372.8409%4,464.407372.8409%
Target2440.000059.0909%45001000000.00019.8602%0.000163.1246%
Difference-440.0000-59.0909%+29995500+10070832892220+4,464.4072+62.9807%+4,464.4072+9.7163%

Known prime factors (3 factors, 248.3 bits, 0.10624245% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
23374743476943825.37493
3 × 31
-3311.951e-113.682e-84.968e-8
2337475323004262278205494980205862013098.7481138625150756631207027300
22 × 33 × 52 × 653 × 60082829 × 10748638427
2017-09-0860082829107486384273.352e+115.22688.8990
2337472471331548362840261579589140818381202338124.21752863385377413191646942830085913
33 × 11 × 43 × 113 × 167 × 1753 × 1011029 × 8027827 × 15416707
2021-07-028027827154167076.689e+110.06860.1329

4 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-07-02Oliver KruseOllaptop300000003000000038124.2170.2440.0030.48828.309%
2021-07-05Oliver KruseManual testing30000000300000000024-
skipped known factor: 43476943
skipped known factor: 24713315483628402615795891408183812023
--1.561--43.883%
2022-03-28Oliver KruseThreadripper-PC3000000010070832992220-
skipped known factor: 43476943
skipped known factor: 24713315483628402615795891408183812023
--4,464--62.970%


Trial Factoring results:
No TF results for M233747


ECM factoring results:
Total ECM effort:12.719 GHz-days
Estimated T-Level:28.159
DigitsB1CompleteFacMiss
201100044.1180.000%
25500006.1400.215%
302500000.63253.162%
3510000000.05195.012%
4030000000.00399.661%


ECM Summary

B1B2factorcurvesGHz-days
110001100000300.039
5000050000002741.635
250000250000002567.636
25000025000000401.193
25000036250000351.200
2500003625000010.034
25000037951073140.489
25000038500000140.492


Lucas-Lehmer results:
No L-L results for M233747


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22Oliver KruseDoppelherz
43476943
532300426227820549498020586201
61BA963156A3B2__no
2017-09-22Oliver KruseManual testing
43476943
532300426227820549498020586201
61BA963156A3B2__no
2017-09-28alpertronManual testing
43476943
532300426227820549498020586201
61BA963156A3B2__no
2017-12-07ATHxps
43476943
532300426227820549498020586201
61BA963156A3B2__no
2020-04-17Oliver KruseAddPrpType5
43476943
532300426227820549498020586201
C1DF770F4B3D20__no
2021-07-02firejugglerMaison
43476943
532300426227820549498020586201
24713315483628402615795891408183812023
C1DF770F4B3D205Dno
2021-07-03marssystemssystem11
43476943
532300426227820549498020586201
24713315483628402615795891408183812023
C1DF770F4B3D205Dno


P-1 factor-bounds graph:
B1 = 30000000, B2 = 10070832992220 (P-1 stage 2)
B1 = 30000000, B2 = 3000000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-12-18T02:30:20+00:00