is 2 105883187 - 1
has 31874016 decimal digits
takes 434.268 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
Actual277289.074864.9351 %150000015000008.92051.8283 %297.995465.5761 %
Target276144.536664.4737 %70000012000000042.81733.9697 %187.353965.8840 %
Difference+1+144.5383+0.4614 %+800000-118500000-33.8967-2.1414 %+110.6415-0.3078 %

Known prime factors (1 factor, 103.8 bits, 0.00009806% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1058831871798170581662030175771917015416132103.82684912941922593913600840
23 × 35 × 5 × 31 × 73 × 659 × 2549 × 16481 × 139439
2020-07-20164811394391.220e+90.13790.1995

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-07-20LaurVManual testing15000001500000132103.8268.7122.035%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-21subgeniusgigacare2632640.019
2010-09-02Mr-Plonklinux-i7-9202642650.035
2012-05-19Richard2652660.071
2014-06-16Ryan PropperManual testing2662690.988
2014-06-18Ryan PropperManual testing2692713.388
2015-01-31Preben SManual testing2712724.517
2020-01-06ixfd64Manual testing2722739.034
2020-02-12SRS TechnologyManual testing27327418.07
2020-02-28LaurVManual testing27427536.13
2020-05-03TheJudgerManual testing275277216.8


ECM factoring results:
No ECM results for M105883187


Lucas-Lehmer results:
No L-L results for M105883187


PRP results:
No PRP results for M105883187


CERT results:
No CERT results for M105883187


P-1 factor-bounds graph:
B1 = 1500000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
TF factor-bounds graph:
277
275
274
273
272
271
269
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
2100
2110
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Last modified: 2024-03-13T02:15:48+00:00