is 2 57282553 - 1
has 17243767 decimal digits
takes 121.407 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2704.171462.8571 %----4.171462.8571 %
Target27333.393164.3836 %4000006500000012.04574.0710 %45.438865.8335 %
Difference-3-29.2217-1.5264 %-400000-65000000-12.0457-4.0710 %-41.2674-2.9763 %

Known prime factors (1 factor, 70.8 bits, 0.00012353% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5728255320022722179539598299672270.76217477155897311
3 × 11 × 941 × 562816987
2011-06-219415628169877.958394.239176.01

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-21shaugeManual testing2270.7622.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.09000e-5
2000-03-08ANONYMOUSv4_computers212544.19000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-09-22ANONYMOUSv4_computers212570.000
2002-11-02ANONYMOUSv4_computers212580.001
2003-08-25Team Prime Ribv4_computers212600.001
2022-06-27LordJuliusManual testing260263
2008-09-24Sturle Sundegraun.ifi2632640.033
2008-09-25Sturle Sundegraun.ifi2642650.065
2008-09-27Sturle Sundegraun.ifi2652660.130
2008-09-27Sturle Sundeiago.ifi2662670.261
2009-05-31KYOJI_KAMEIC69F7CD4E2672680.522
2011-04-22SuperCooperHome_Comp2682691.044
2011-06-21shaugeManual testing2692702.087


ECM factoring results:
No ECM results for M57282553


Lucas-Lehmer results:
No L-L results for M57282553


PRP results:
No PRP results for M57282553


CERT results:
No CERT results for M57282553


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
270
269
268
267
266
265
264
263
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00