is 2 141999881 - 1
has 42746224 decimal digits
takes 790.860 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
Actual2726.734761.1111 %1455000145500011.75013.1786 %18.484962.3472 %
Target277215.550663.6364 %90000016000000077.26994.0749 %292.820665.1182 %
Difference-5-208.8159-2.5253 %+555000-158545000-65.5198-0.8964 %-274.3357-2.7709 %

Known prime factors (1 factor, 75.5 bits, 0.00005316% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
141999881530171542829103724426492375.489186680277157804
22 × 29 × 2593 × 4751 × 130633
2019-08-21475113063353.8870.09380.1074

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-08-21timbitManual testing1455000145500012375.48911.751.881%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-16WPSs22632640.014
2010-12-16Richardsvn_022642650.026
2012-12-11Richardworkmy2652660.053
2015-02-22rubikvn2100zz_com2662670.105
2016-03-25dbaughManual testing2672680.211
2016-04-07Mihai PredaManual testing2682690.421
2016-04-15Mihai PredaManual testing2692700.842
2016-04-18Mihai PredaManual testing2702711.684
2016-04-24Mihai PredaManual testing2712723.368


ECM factoring results:
No ECM results for M141999881


Lucas-Lehmer results:
No L-L results for M141999881


PRP results:
No PRP results for M141999881


CERT results:
No CERT results for M141999881


P-1 factor-bounds graph:
B1 = 1455000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
this exponent TF target: 77
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00