is 2 750000089 - 1
has 225772524 decimal digits
takes 28,906.253 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
Actual2845,223.822964.2857 %45000004500000251.48441.7499 %5,475.307264.9107 %
Target2845,223.822964.2857 %450000010000000003,282.57454.3810 %8,506.397365.8504 %
Difference-----995500000-3,031.0901-2.6311 %-3,031.0901-0.9397 %

Known prime factors (1 factor, 89.5 bits, 0.00001194% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7500000898914303006721906035113761212789.526594286796592760540
22 × 5 × 347 × 349 × 541 × 1181 × 384029
2021-08-091181384029296,6951.23172.1839

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-08-09KrieselManual testing4500000450000012789.526252.81.750%


Trial Factoring results:
57585960616263646566676869707172737475767778798081828384
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2023-10-18James HeinrichManual testing267268
2023-10-18James HeinrichManual testing268269
2009-08-27S04803myth2692700.159
2009-10-24S04803phenom2702710.319
2010-01-21S04803phenom2712720.638
2011-01-14James HeinrichManual testing2722731.275
2011-01-14James HeinrichManual testing2732742.551
2012-01-27monstManual testing2742755.101
2015-01-22XebecerManual testing27527610.20
2019-02-03GdSManual testing27627720.41
2019-02-03GdSManual testing27727840.81
2019-02-03GdSManual testing27827981.62
2019-02-03GdSManual testing279280163.2
2020-12-25KrieselManual testing280281326.5
2020-12-25KrieselManual testing281282653.0
2020-12-25KrieselManual testing2822831,306
2020-12-25KrieselManual testing2832842,612


ECM factoring results:
No ECM results for M750000089


Lucas-Lehmer results:
No L-L results for M750000089


PRP results:
No PRP results for M750000089


CERT results:
No CERT results for M750000089


P-1 factor-bounds graph:
B1 = 4500000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
TF factor-bounds graph:
284
283
282
281
280
279
278
277
276
275
274
273
272
271
270
269
268
this exponent TF target: 84
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00