is 2 30789457 - 1
has 9268551 decimal digits
takes 32.072 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LE934D15A81597162double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27362.126665.7534 %38000069350001.11343.2846 %63.240066.8783 %
Target27115.527364.7887 %220000325000002.98873.6853 %18.516066.0864 %
Difference+2+46.5993+0.9647 %+160000-25565000-1.8753-0.4007 %+44.7240+0.7919 %

Known prime factors (1 factor, 92.5 bits, 0.00030045% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3078945770321463448790190649786950572892.506114197310216919692104
23 × 1433 × 87083 × 141359 × 809213
2020-01-0614135980921359,961,0170.26850.4345

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2006-03-14ANONYMOUSv4_computers450000450000--0.6801.824%
2020-01-06Architects Cubedpfs238000069350001222892.5061.1134.026%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-11-15Jossv4_computers212521.95000e-5
2003-08-08AxelFoxv4_computers212600.002
2005-09-22Per Jessenv4_computers212680.971
2012-04-21apsenManual testing2682691.942
2013-01-31Architects CubedManual testing2692703.883
2018-04-11ramgeisManual testing2702717.767
2019-12-20ANONYMOUSManual testing27127346.60


ECM factoring results:
No ECM results for M30789457


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-08-14ANONYMOUSv4_computersE934D15A8159716232.07
2014-01-22Architects CubedR720_6E934D15A8159716232.07


PRP results:
No PRP results for M30789457


CERT results:
No CERT results for M30789457


P-1 factor-bounds graph:
B1 = 380000, B2 = 6935000 (P-1 stage 2)
B1 = 450000 (P-1 stage 1)
B1 = 380000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
273
271
270
269
268
260
252
this exponent TF target: 71
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00