is 2 303679 - 1
has 91417 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
Actualunknown50000500000.000514.9834%0.000514.9834%14.9834%
PrimeNet2400.000052.5000%3200900000.000115.5931%0.000159.9067%7.4067%
GPU722440.000056.8182%55001500000.000111.4122%0.000161.7462%4.9280%
Difference-440.0000-56.8182%+44500-100000+0.0004+3.5712%+0.0004-46.7627%-46.7627%

Known prime factors (3 factors, 240.5 bits, 0.07919414% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
30367970798743681969174711962.61811656838912465
5 × 491 × 14683 × 323381
2014-04-23146833233814.37750.00030.0003
303679114045306614816431142297292683.23818777279070139264016
24 × 3 × 391193313961234667
2016-05-271639119331396123466711,443,661219,763,711410,457,411
303679308602642432498362320623776972994.64050810665609491990279312
24 × 3 × 383 × 2763852567966274493
2021-11-0938327638525679662744931.410e+101.553e+92.900e+9

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
3036798074264431153972132275967668566495434769535944145.856
30367921848679381156835774874861420610706302634004428748157.258
30367935194682978356835336785529995713715958098268642395
4113
54177.878
30367924917393391528490522324929708003192731392307997295
44836142266661752008223
73240.496
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06T16:51:15Lisander ViaeneManual testing5000050000---0.001--9.773%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-04-23T20:47:50nordisweet1610000000101000000027--0.694
2021-04-28T13:36:04nordisweet1610000000101000000065--0.694


Trial Factoring results:
No TF results for M303679


ECM factoring results:

Old Calculation Method

Total ECM effort:13.742 GHz-days
Estimated T-Level:27.203
DigitsB1CurvesCompleteFacMiss
2011000573 / 1005.7300.315%
2550000573 / 2802.04612.872%
30250000282 / 6400.44164.341%

New Calculation Method

Total ECM effort:13.742 GHz-days
Estimated T-Level:27.203
DigitsB1CompleteFacMiss
201100032.8870.000%
25500004.3091.344%
302500000.42765.239%
3510000000.03396.711%
4030000000.00299.783%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002071.579
500005000000840.641
250000250000001425.417
250000355000001215.265
25000036750000190.839


Lucas-Lehmer results:
No L-L results for M303679


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:08:09kkmrkkblmbrbkManual testingFB74964B727FCC__?
2017-09-27T12:45:47csabaofficeFB74964B727FCC__?
2017-10-31T07:45:37ATHec2-1xd
7079874368196917471
11404530661481643114229729
FB74964B727FCC__no
2020-04-18T07:19:48Oliver KruseAddPrpType5
7079874368196917471
11404530661481643114229729
DFF5B30B41F54A__no
2021-11-10T05:38:33SRJ2877LTOS
7079874368196917471
11404530661481643114229729
30860264243249836232062377697
DFF5B30B41F54A6Bno


P-1 factor-bounds graph:
B1 = 50000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
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1016
1017
1018
1019
TF factor-bounds graph:
250
260
270
280
290
2100
Last modified: 2022-02-06T16:51:15+00:00