is 2 58348877 - 1
has 17564763 decimal digits
takes 123.667 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
Actual27332.782964.3836 %----32.782964.3836 %
Target27332.782964.3836 %4000006500000012.04574.0804 %44.828565.8369 %
Difference----400000-65000000-12.0457-4.0804 %-12.0457-1.4533 %

Known prime factors (1 factor, 73.7 bits, 0.00012636% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
58348877156404299010649692683612373.728134025115008340
22 × 5 × 1201 × 2083 × 2678699
2012-11-062083267869932.7830.45460.8377

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2012-11-06owftheevilManual testing2373.7282.4590.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-23ANONYMOUSv4_computers212532.06000e-5
2000-02-09ANONYMOUSv4_computers212544.11000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2000-06-29ANONYMOUSv4_computers212560.000
2001-07-17ANONYMOUSv4_computers212570.000
2002-09-22ANONYMOUSv4_computers212580.001
2003-07-30ANONYMOUSv4_computers212590.001
2003-12-02ANONYMOUSv4_computers212610.003
2003-12-13ANONYMOUSv4_computers212610.003
2022-06-27LordJuliusManual testing261263
2008-10-29KYOJI_KAMEIwlaptop2632640.032
2008-10-30Stefan MuthCore_2_Duo2642650.064
2008-10-30Stefan MuthCore_2_Duo2652660.128
2008-11-02trifbrownie2662670.256
2009-06-01Sturle Sundegorky.ifi2672680.512
2011-07-02TheJudgerManual testing2682691.025
2011-07-02TheJudgerManual testing2692702.049
2011-10-20rlakeManual testing2702714.098
2012-07-21bcp19Manual testing2712728.196
2012-09-24Tom DuellManual testing27227316.39


ECM factoring results:
No ECM results for M58348877


Lucas-Lehmer results:
No L-L results for M58348877


PRP results:
No PRP results for M58348877


CERT results:
No CERT results for M58348877


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
263
261
259
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