is 2 50889019 - 1
has 15319122 decimal digits
takes 93.226 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
Actual2681.171361.7647 %----1.171361.7647 %
Target27337.588564.3836 %340000550000008.81373.7947 %46.402365.7351 %
Difference-5-36.4173-2.6189 %-340000-55000000-8.8137-3.7947 %-45.2310-3.9704 %

Known prime factors (1 factor, 78.2 bits, 0.00015360% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
508890193390946145578947068674812478.1663331707126815460
22 × 3 × 5 × 31 × 37 × 149 × 977 × 332561
2009-04-289773325612,327.80.05060.0899

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-04-28ATHpc46032478.1661.8440.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-15ANONYMOUSv4_computers212532.36000e-5
2000-02-09ANONYMOUSv4_computers212544.72000e-5
2000-04-19ANONYMOUSv4_computers212560.000
2001-04-29ANONYMOUSv4_computers212570.000
2002-01-28ANONYMOUSv4_computers212580.001
2003-08-25ANONYMOUSv4_computers212590.001
2003-11-08ANONYMOUSv4_computers212600.002
2008-09-27DerekManual testing212640.037
2008-11-28xor37hSCON022642650.073
2008-12-01xor37hSCON022652660.147
2008-12-04ANONYMOUS2662670.294
2009-04-21BARBBARITTABARBBARITTA2672680.587


ECM factoring results:
No ECM results for M50889019


Lucas-Lehmer results:
No L-L results for M50889019


PRP results:
No PRP results for M50889019


CERT results:
No CERT results for M50889019


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
TF factor-bounds graph:
268
267
266
265
264
260
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