is 2 70505249 - 1
has 21224195 decimal digits
takes 188.504 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
Actual27454.263663.5135%645000132225005.15714.0380%59.420664.9868%
Target27454.263663.5135%45000012800000028.68504.0024%82.948664.9739%
Difference---+195000-114777500-23.5280+0.0355%-23.5280+0.0130%

Known prime factors (1 factor, 68.7 bits, 0.00009745% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
705052494819804060541729094412168.7083418046265280
26 × 5 × 29 × 41 × 8983511		2015-01-206489835111.65661.89773.5439

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-01-20apocalypsecapn-slick6450001322250062168.7085.157377.010.314.038%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2007-09-13ANONYMOUSv4_computers21263--0.023--
2008-11-24Wojciech FlorekManual testing21264--0.050--
2010-02-21Sturle Sundekinner.ifi264265--0.053--
2010-02-25ITSTV265266--0.106--
2010-02-25sannerud.comJimEmcLap266267--0.212--
2010-02-25sannerud.comJimEmcLap267268--0.424--
2010-02-26sannerud.comJimEmcLap268269--0.848--
2012-04-26sikafarmi_rendering_farmManual testing269270--1.696--
2013-04-03SMoffatManual testing270271--3.392--
2014-09-25Mark RoseManual testing271272--6.783--
2014-11-01BdotManual testing272273--13.57--
2014-11-04ChuckManual testing273274--27.13--


ECM factoring results:
No ECM results for M70505249


Lucas-Lehmer results:
No L-L results for M70505249


PRP results:
No PRP results for M70505249


P-1 factor-bounds graph:
B1 = 645000, B2 = 13222500 (P-1 stage 2)
B1 = 645000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
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: 2023-07-11T14:45:05+00:00