is 2 327247 - 1
has 98512 decimal digits
takes 0.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actualunknown50000500000.000515.1156%0.000515.1156%15.1156%
PrimeNet2400.000052.5000%34001000000.000116.1267%0.000160.1602%7.6602%
GPU722440.000056.8182%60001600000.000111.7978%0.000261.9127%5.0945%
Difference-440.0000-56.8182%+44000-110000+0.0004+3.3178%+0.0004-46.7971%+10.0211%

Known prime factors (3 factors, 187.6 bits, 0.05733193% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
32724733242345568107591651.5625079090957
3 × 36923 × 45853
2014-04-2336923458530.00120.00040.0008
327247584746232118476236012065.66489343253279400
23 × 52 × 271 × 1648399507
2015-02-13271164839950738.1110.92601.7296
32724715477191661817168666092270.3912364756844496232
23 × 3 × 17 × 137 × 42306369767
2015-02-1313742306369767978.8223.76744.390

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
32724719438336317731240602153972361912315936117.226
327247514498153645959702684400292565904623137121.953
3272479050229508023087062502048653233655723900941136.055
32724730085085677638780284661131997579677963645632380554
5697831
57187.617
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06T16:08:52Lisander ViaeneManual testing5000050000-
skipped known factor: 3324234556810759
--0.001--9.872%


Trial Factoring results:
No TF results for M327247


ECM factoring results:
Total ECM effort:7.661 GHz-days
Estimated T-Level:26.435
DigitsB1CompleteFacMiss
201100023.8990.000%
25500003.0284.840%
302500000.28775.049%
3510000000.02297.832%
4030000000.00199.860%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002622.005
50000500000010.008
500005000000180.138
250000250000001445.511


Lucas-Lehmer results:
No L-L results for M327247


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T19:40:21Oliver KruseOllaptopAD9CA59F278519__?
2017-09-22T20:38:32Oliver KruseManual testingAD9CA59F278519__?
2017-10-13T01:50:38Oliver KruseGTX-0AD9CA59F278519__no
2017-12-12T08:05:50ATHxps
3324234556810759
58474623211847623601
1547719166181716866609
AD9CA59F278519__no
2020-04-18T07:57:45Oliver KruseAddPrpType5
3324234556810759
58474623211847623601
1547719166181716866609
2D6F95D95D1698__no


P-1 factor-bounds graph:
B1 = 50000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
250
260
270
280
290
2100
Last modified: 2022-02-06T16:08:52+00:00