is 2 601246421 - 1
has 180993208 decimal digits
takes 18,183.529 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
Actual2846,516.242764.2857 %7000000124642106588.03774.1107 %7,104.280465.7538 %
Target2833,258.121263.8554 %34000007500000001,932.87604.3055 %5,190.997265.4116 %
Difference+1+3,258.1215+0.4303 %+3600000-625357894-1,344.8383-0.1948 %+1,913.2832+0.3422 %

Known prime factors (1 factor, 102.3 bits, 0.00001701% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
601246421609752806912690890069038262712931102.2665070739597073550730284
22 × 3 × 47 × 176431 × 820609 × 62098489
2014-06-2782060962098489213,524,251182.39277.11

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-05-13Never Odd Or EvenDad250000250000--10.000.483%
2014-05-13Never Odd Or EvenDad500000500000--20.000.714%
2014-05-16Never Odd Or EvenDad10000001000000--40.001.008%
2014-05-30Never Odd Or EvenDad20000002000000--79.991.370%
2014-06-17Never Odd Or EvenDad70000007000000--280.02.197%
2014-06-17Never Odd Or EvenDad700000050000000--373.73.731%
2014-06-27Never Odd Or EvenDad7000000124642106231102.266536.34.464%


Trial Factoring results:
57585960616263646566676869707172737475767778798081828384
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-10-15ChuckManual testing2652670.037
2014-05-13Never Odd Or EvenManual testing2672700.348
2014-05-13Never Odd Or EvenManual testing2702710.398
2014-05-13Never Odd Or EvenManual testing2712720.795
2014-05-13Never Odd Or EvenManual testing2722731.591
2014-05-13Never Odd Or EvenManual testing2732743.182
2014-05-13Never Odd Or EvenManual testing2742756.364
2014-05-13Never Odd Or EvenManual testing27527612.73
2014-05-13Never Odd Or EvenManual testing27627725.45
2014-05-13Never Odd Or EvenManual testing27727850.91
2014-05-13Never Odd Or EvenManual testing278279101.8
2014-05-13Never Odd Or EvenManual testing279280203.6
2014-05-13Never Odd Or EvenManual testing280281407.3
2014-05-15Never Odd Or EvenManual testing281282814.5
2014-05-20Never Odd Or EvenManual testing2822831,629
2014-05-26Never Odd Or EvenManual testing2832843,258


ECM factoring results:
No ECM results for M601246421


Lucas-Lehmer results:
No L-L results for M601246421


PRP results:
No PRP results for M601246421


CERT results:
No CERT results for M601246421


P-1 factor-bounds graph:
B1 = 7000000, B2 = 124642106 (P-1 stage 2)
B1 = 7000000, B2 = 50000000 (P-1 stage 2)
B1 = 7000000 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 500000 (P-1 stage 1)
B1 = 250000 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
109
TF factor-bounds graph:
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282
281
280
279
278
277
276
275
274
273
272
271
270
267
this exponent TF target: 83
TF double-checked to: 67
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2100
2110
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Last modified: 2024-03-13T02:15:48+00:00