is 2 104254757 - 1
has 31383810 decimal digits
takes 415.100 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
Actual276146.794264.4737 %6500006500003.75271.4352 %150.546964.9836 %
Target276146.794264.4737 %65000012000000041.29373.9236 %188.087965.8676 %
Difference-----119350000-37.5411-2.4884 %-37.5411-0.8840 %

Known prime factors (1 factor, 85.4 bits, 0.00008188% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
104254757496940826231152784747730072685.361238330048686005179
19 × 73 × 103 × 269 × 32587 × 190313
2021-06-0232587190313108,6560.23770.3829

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-06-02KrieselManual testing65000065000012685.3613.7751.435%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-23Richard2632640.019
2010-08-26sasaki3MATE_J2642650.036
2012-05-09omiXorpLLB16-T5500-192652660.072
2014-05-16webbertManual testing2662670.143
2014-06-08SMoffatManual testing2672680.287
2014-10-12Ilya AlexandrovManual testing2682728.601
2020-04-09tscManual testing2722739.175
2020-04-13gcardonaManual testing27327418.35
2021-02-04TheJudgerManual testing274276110.1


ECM factoring results:
No ECM results for M104254757


Lucas-Lehmer results:
No L-L results for M104254757


PRP results:
No PRP results for M104254757


CERT results:
No CERT results for M104254757


P-1 factor-bounds graph:
B1 = 650000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
276
274
273
272
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00