is 2 98801 - 1
has 29743 decimal digits
takes 0.000 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
Actual267300.745174.6269 %10000000007345249276365012,898.039828.9084 %13,198.785081.9618 %
Target2440.000061.3636 %1200800000.00003.9927 %0.000062.9063 %
Difference+23+300.7451+13.2632 %+999998800+73452492683650+12,898.0398+24.9157%+13,198.7849+19.0556 %

Known prime factors (2 factors, 94.0 bits, 0.09518104% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
98801212422151927.6621075
52 × 43
-25432.231e-108.372e-81.639e-7
98801958529734533518109532066.377485080988316676
22 × 271 × 5801 × 77140439
2009-11-02580177140439153.930.01360.0253

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-02-05kkmrkkblmbrbkManual testing100000000200000000012
skipped known factor: 212422151
skipped known factor: 95852973453351810953
---40.756%
2022-09-19George WoltmanSkylakeX100000000073452492763650
skipped known factor: 212422151
skipped known factor: 95852973453351810953
--15,15567.712%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-04-22nordisweet1640000000200000000027--0.533
2021-05-01nordisweet1640000000200000000065--0.533


Trial Factoring results:
5758596061626364656667
No TF results for M98801


ECM factoring results:
Total ECM effort:12.964 GHz-days
Estimated T-Level:30.775
DigitsB1CompleteFacMiss
201100085.8550.000%
255000013.4400.000%
302500001.59720.259%
3510000000.15585.637%
4030000000.01398.726%


ECM Summary

B1B2factorcurvesGHz-days
10.007
110001100000150.007
5000050000002740.636
250000250000006297.300
10000001000000001085.014


Lucas-Lehmer results:
No L-L results for M98801


PRP results:
dateuseridcompidcofactorsres64
2017-09-21Oliver KruseOllaptop
212422151
95852973453351810953
AFDDD0504394DF8A
2017-09-21Oliver KruseManual testing
212422151
95852973453351810953
AFDDD0504394DF8A
2017-10-13kkmrkkblmbrbkManual testing
212422151
95852973453351810953
AFDDD0504394DF8A
2020-04-17Oliver KruseAddPrpType5
212422151
95852973453351810953
FFE62E68A6FA9725
2024-02-03Wentao HuangManual testing
212422151
95852973453351810953
FFE62E68A6FA9725


CERT results:
No CERT results for M98801


P-1 factor-bounds graph:
B1 = 1000000000, B2 = 73452492763650 (P-1 stage 2)
B1 = 1000000000 (P-1 stage 1)
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=30.78 ~= 86-bit
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Last modified: 2024-03-13T02:15:48+00:00