is 2 70655521 - 1
has 21269432 decimal digits
takes 188.905 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
Actual275108.298864.0000%----108.298864.0000%
Target27454.148163.5135%45000012800000028.68504.0035%82.833264.9742%
Difference+1+54.1507+0.4865%-450000-128000000-28.6850-4.0035%+25.4656-0.9742%

Known prime factors (1 factor, 74.5 bits, 0.00010550% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
70655521275000297801503220113992374.542194606376054819
3 × 6991 × 78031 × 118913		2015-01-297803111891389.7680.31110.6157

P-1 results:
No P-1 results for M70655521


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2007-10-29ANONYMOUSv4_computers21263--0.023--
2008-11-23Wojciech FlorekManual testing21264--0.050--
2010-03-07Krzysztof Opalskiblackbox264265--0.053--
2010-07-26GrunwalderGIMPcompute-head265266--0.106--
2010-08-01sirlprsirl24266267--0.212--
2010-08-02Bold_Seekerpatws8267268--0.423--
2010-08-03S00030vd01268269--0.846--
2012-11-11ArtfulDodgerDodger-1269270--1.692--
2013-06-23Wikus Zandberg270271--3.384--
2014-10-12garoManual testing271272--6.769--
2014-11-13BdotManual testing272273--13.54--
2015-01-29Gordon SpenceManual testing273274--27.08--
2015-01-29Gordon SpenceManual testing27427574.5422335.62382.872.19


ECM factoring results:
No ECM results for M70655521


Lucas-Lehmer results:
No L-L results for M70655521


PRP results:
No PRP results for M70655521


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
263
this exponent TF target: 74
TF double-checked to: 67.9
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00