is 2 12202037 - 1
has 3673180 decimal digits
takes 4.698 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
Actual2672.435264.1791 %40000034345080010.65729.6948 %13.092467.6519 %
Target2684.884864.7059 %90000110000000.38213.0793 %5.266965.7927 %
Difference-1-2.4497-0.5268 %+310000+332450800+10.2751+6.6154%+7.8255+1.8592 %

Known prime factors (4 factors, 296.0 bits, 0.00242577% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
122020371064454733382351031856.5634361791123
4361791123
2000-03-01143617911230.0013132.66247.78
12202037419730758015042552412065.1861719920854260
22 × 33 × 5 × 7 × 263 × 641 × 2699
2018-07-1764126990.70930.00040.0007
12202037138303846587159542564922412683.516566724418993154760
23 × 3 × 5 × 13 × 67 × 401 × 1667 × 8111339
2022-02-0616678111339241,8550.24760.4608
1220203720514582319713306733104401932890.72984062121429861697408
27 × 11 × 13 × 163 × 164569 × 171205891
2022-02-0616456917120589123,876,3505.29419.726

11 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-01-25nordisweet16_30.8b8400000400000
skipped known factor: 41973075801504255241
--0.2232.146%
2022-02-06nordisweet16_30.8b10400000343450800253174.24513.268.904%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-03-01ANONYMOUSv4_computers??
56.563
18
2018-07-17TJAOIManual testing265266*
65.186
20
0.114


ECM factoring results:
No ECM results for M12202037


Lucas-Lehmer results:
No L-L results for M12202037


PRP results:
dateuseridcompidcofactorsres64
2022-02-13Poaooffice-CN3
106445473338235103
41973075801504255241
13830384658715954256492241
2051458231971330673310440193
95BC96901D6AFD00


CERT results:
dateuseridcompid
2022-02-13curtiscwcm202--11l


P-1 factor-bounds graph:
B1 = 400000, B2 = 343450800 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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100
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109
1010
TF factor-bounds graph:
this exponent TF target: 68
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00