is 2 1101371 - 1
has 331546 decimal digits
takes 0.033 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L27AD75AB925B60DCdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26726.979068.6567 %300000100000000.03564.1154 %27.014669.9466 %
Target2600.139565.0000 %45001100000.00040.6840 %0.139965.2394 %
Difference+7+26.8396+3.6567 %+295500+9890000+0.0352+3.4315%+26.8747+4.7072 %

Known prime factors (1 factor, 74.3 bits, 0.00674193% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1101371225198633082479349639672374.25410223559231288973
263 × 38872848788171
2009-11-27263388728487881713,473.791,020169,999

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-02-17Jossv4_computers15000153750--0.0011.994%
2016-03-17alpertronManual testing3000001000000012---8.198%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-09-30Jossv4_computers212570.017
2001-12-01ANONYMOUSv4_computers212570.017
2022-03-07firejugglerManual testing257260
2022-03-07LordJuliusManual testing257260
2022-04-12LordJuliusManual testing21261
2009-02-14Sturle Sundegoomba.ifi2602610.139
2022-04-12LordJuliusManual testing261262
2022-04-12LordJuliusManual testing262263
2022-04-12LordJuliusManual testing263264


ECM factoring results:
Total ECM effort:17.532 GHz-days
Estimated T-Level:25.655
DigitsB1CompleteFacMiss
201100014.7310.000%
25500001.61319.937%
302500000.13187.717%
3510000000.00999.131%


ECM Summary

B1B2factorcurvesGHz-days
10.056
5000050000002799.73
25000025000000447.745


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-04-14ANONYMOUSv4_computers27AD75AB925B60DC0.033


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-3
22519863308247934963967
8F3C29BCBA551DB7
2017-10-16Oliver KruseThreadripper-PC
22519863308247934963967
8F3C29BCBA551DB7
2018-01-01ATHec2-1xh
22519863308247934963967
8F3C29BCBA551DB7


CERT results:
No CERT results for M1101371


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 15000, B2 = 153750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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263
262
261
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257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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Last modified: 2024-02-09T03:30:02+00:00