is 2 63300751 - 1
has 19055425 decimal digits
takes 148.698 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
Actual27460.439564.8649 %----60.439564.8649 %
Target27460.439564.8649 %4000007000000014.27863.7856 %74.718166.1950 %
Difference----400000-70000000-14.2786-3.7856 %-14.2786-1.3301 %

Known prime factors (1 factor, 77.5 bits, 0.00012245% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
633007512150814055723408610263992477.5091698885101476449
32 × 11969 × 82267 × 191707
2013-07-0882267191707785.900.30050.5703

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-07-08kurlyhex2477.5092.0050.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-11-17ANONYMOUSv4_computers212502.40000e-6
2003-07-30Gordon Spencev4_computers212590.001
2022-03-30LordJuliusManual testing21263
2009-02-16Wojciech Florekarmada22632640.031
2009-09-02unconnectedsaudi-E54052642660.177
2009-09-07Gnorfe_v2152662670.236
2009-09-10Gnorfe_v2152672680.472
2009-09-14Gnorfe_v2152682690.944
2012-01-04FreeTibetL82692701.889
2013-04-10lycornManual testing2702713.778
2013-05-06TheJudgerManual testing27127322.67
2013-07-03RichD0Manual testing27327430.22


ECM factoring results:
No ECM results for M63300751


Lucas-Lehmer results:
No L-L results for M63300751


PRP results:
No PRP results for M63300751


CERT results:
No CERT results for M63300751


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
274
273
271
270
269
268
267
266
264
263
259
250
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00