is 2 427962001 - 1
has 128829400 decimal digits
takes 9,022.866 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
Actual2680.139357.3529%----0.139357.3529%0.0000%
PrimeNet278143.041962.8205%1600000110000000229.46265.5688%372.504564.8909%2.0704%
GPU722822,288.677064.6341%2400000110000000252.58684.1250%2,541.263766.0930%1.4589%
Difference-14-2,288.5377-7.2812%-2400000-110000000-252.5868-4.1250%-2,541.1245-8.7401%-8.7401%

Known prime factors (3 factors, 177.3 bits, 0.00004142% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
427962001103767595453629191753.20412123459
33 × 277 × 1621
2008-03-0827716213.155e-60.01070.0172
4279620011100749927200833991856.611128603699
7 × 18371957
2015-04-167183719572.913e-530.60057.152
4279620012007809335593839156872167.444234577991843
13 × 19 × 949708469
2022-08-05199497084690.07701,581.82,954.4

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
427962001114222173141387923005227340208168134109.815
427962001208345546883921508705099053371221035337120.648
4279620012210095979988073313600953785782438011338124.055
42796200122933634556509454566029767096620543474110469479122
9847
54177.260
P-1 results:
No P-1 results for M427962001


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-04-16T11:44:00TJAOIManual testing256257*56.611186.69515e-618,5091.37338e-5
2022-08-05T09:29:47TJAOIManual testing267268*67.444210.00818,5090.016
2022-08-10T19:29:46LordJuliusManual testing2126853.204173.15519e-618,5096.47227e-6
2022-08-10T19:29:46LordJuliusManual testing2126867.444210.07718,5090.158
2022-08-10T19:29:47LordJuliusManual testing2126856.611182.91256e-518,5095.97456e-5


ECM factoring results:
No ECM results for M427962001


Lucas-Lehmer results:
No L-L results for M427962001


PRP results:
No PRP results for M427962001


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
257
250
260
270
280
290
2100
Last modified: 2022-08-10T19:29:47+00:00