is 2 302983 - 1
has 91207 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
Actual26798.071271.6418%50000500000.00050.3997%98.071871.7551%0.1134%
PrimeNet2400.000052.5000%3200900000.000115.5883%0.000159.9044%7.4044%
GPU722440.000056.8182%55001500000.000111.4084%0.000161.7445%4.9264%
Difference+23+98.0712+14.8236%+44500-100000+0.0004-11.0087%+98.0716+10.0106%+10.0106%

Known prime factors (3 factors, 233.5 bits, 0.07706615% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
302983232315046789745831754.36738337967277
2251 × 17031527
2014-04-232251170315270.01040.00960.0179
3029832391146267354849348137619272787.628394600731287704153061
19 × 631 × 3089479 × 10653435431
2021-11-06308947910653435431162,135,4846.015011.178
30298335076527536486239015099942972891.5035788530633152064474756
22 × 33 × 47 × 1217 × 23993 × 39054545701
2015-02-1323993390545457011.711e+921.94040.978

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
302983555499256981667918199218438010439504610144143141.995
3029838148805135860608647980118060231413613795315144145.869
30298383873107890638659649079379503814904486045256688573
0319
54179.130
30298319484984984015120391526197401729920013286500075390
186241288127993481977
71233.497
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06T16:51:09Lisander ViaeneManual testing5000050000---0.001--0.400%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-04-24T08:28:35nordisweet1610000000101000000027--0.694
2021-04-28T12:09:32nordisweet1610000000101000000065--0.694


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-03-05T00:00:00ANONYMOUSv4_computers??54.367170.0020.0040.005
2003-08-25T00:00:00ANONYMOUSv4_computers??54.367170.0020.0040.005
2000-04-12T00:00:00ANONYMOUSv4_computers21254--0.008--


ECM factoring results:

Old Calculation Method

Total ECM effort:13.795 GHz-days
Estimated T-Level:27.070
DigitsB1CurvesCompleteFacMiss
2011000638 / 1006.3800.164%
2550000638 / 2802.27910.201%
30250000265 / 6400.41466.075%

New Calculation Method

Total ECM effort:13.795 GHz-days
Estimated T-Level:27.070
DigitsB1CompleteFacMiss
201100034.1160.000%
25500004.3431.299%
302500000.42065.722%
3510000000.03296.824%
4030000000.00299.793%


ECM Summary

B1B2factorcurvesGHz-days
5000050000003702.823
50000500000030.023
250000250000001254.768
25000036750000190.839
250000367500001215.342


Lucas-Lehmer results:
No L-L results for M302983


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T15:15:55Oliver KruseDoppelherz
23231504678974583
3507652753648623901509994297
1E9C8CEF0BE54D95no
2017-09-24T17:45:38Oliver KruseManual testing
23231504678974583
3507652753648623901509994297
1E9C8CEF0BE54D95no
2017-10-12T22:07:08Oliver KruseGTX-11E9C8CEF0BE54D__no
2017-12-11T05:51:22ATHxps
23231504678974583
3507652753648623901509994297
1E9C8CEF0BE54D__no
2020-04-17T22:21:35Oliver KruseAddPrpType5
23231504678974583
3507652753648623901509994297
F38B8299086F4E__no
2021-11-06T07:23:44SRJ2877LTOS
23231504678974583
239114626735484934813761927
3507652753648623901509994297
F38B8299086F4EC4no


P-1 factor-bounds graph:
B1 = 50000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
254
2
250
260
270
280
290
2100
Last modified: 2022-02-06T16:51:09+00:00