is 2 58500787 - 1
has 17610492 decimal digits
takes 123.989 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
Actual27332.697864.3836 %----32.697864.3836 %
Target27332.697864.3836 %4000006500000012.04574.0817 %44.743465.8373 %
Difference----400000-65000000-12.0457-4.0817 %-12.0457-1.4538 %

Known prime factors (1 factor, 80.4 bits, 0.00013743% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5850078715957075258960871106100072580.40013638342385856169
34 × 23 × 101 × 80177 × 904019
2012-08-01801779040197,238.00.38430.5015

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-08-01Craig MeyersManual testing2580.4002.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.05000e-5
2000-02-09ANONYMOUSv4_computers212544.10000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-07-17ANONYMOUSv4_computers212570.000
2002-10-07ANONYMOUSv4_computers212580.001
2003-07-21ANONYMOUSv4_computers212590.001
2003-10-231997rj7v4_computers212600.001
2022-06-27LordJuliusManual testing260263
2008-10-31Sturle Sundefigaro.ifi2632640.032
2008-11-02Sturle Sundenikabrik.ifi2642650.064
2008-11-04Sturle Sundenikabrik.ifi2652660.128
2008-11-05Sturle Sundeiago.ifi2662670.255
2009-10-04Sturle Sundegofy.ifi2672680.511
2011-04-30UngelovendeManual testing2682717.153
2012-06-11lycornManual testing27127324.53


ECM factoring results:
No ECM results for M58500787


Lucas-Lehmer results:
No L-L results for M58500787


PRP results:
No PRP results for M58500787


CERT results:
No CERT results for M58500787


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
273
271
268
267
266
265
264
263
260
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00