is 2 1983103 - 1
has 596974 decimal digits
takes 0.130 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
Actual26714.983568.6567 %1320001343815200.70995.8700 %15.693570.4966 %
Target2620.309866.1290 %80005000000.00331.1976 %0.313166.5347 %
Difference+5+14.6737+2.5277 %+124000+133881520+0.7066+4.6724%+15.3803+3.9619 %

Known prime factors (1 factor, 44.6 bits, 0.00224950% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1983103268492156521771444.6106769496
23 × 846187
-88461871.488e-60.00440.0082

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-08-14USAFSS6917th_Scty_Sq132000134381520
skipped known factor: 26849215652177
--0.7109.544%


Trial Factoring results:
5758596061626364656667
No TF results for M1983103


ECM factoring results:
Total ECM effort:25.740 GHz-days
Estimated T-Level:25.329
DigitsB1CompleteFacMiss
201100010.9130.002%
25500001.03135.660%
302500000.06693.636%
3510000000.00399.691%


ECM Summary

B1B2factorcurvesGHz-days
500005000000272.022
50000675000070.586
50000698337170.596
50000709977370.601
50000750000021621.93


Lucas-Lehmer results:
No L-L results for M1983103


PRP results:
dateuseridcompidcofactorsres64
2017-10-05Oliver KruseGTX-2
26849215652177
10D089D27DFB7D40
2017-11-12kkmrkkblmbrbkc4.xlarge
26849215652177
10D089D27DFB7D40


CERT results:
No CERT results for M1983103


P-1 factor-bounds graph:
B1 = 132000, B2 = 134381520 (P-1 stage 2)
B1 = 132000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
this exponent TF target: 62
TF double-checked to: 67
ECM T-Level=25.33 ~= 68-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00