is 2 56325251 - 1
has 16955591 decimal digits
takes 119.378 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L37006F76765CEAEEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27467.924564.8649%565000122887503.69933.8088%71.623966.2031%1.3382%
PrimeNet2692.119662.3188%240000100000002.37175.3715%4.491364.3429%2.0240%
GPU7227333.960764.3836%400000130000003.33904.0624%37.299765.8304%1.4469%
Difference+1+33.9638+0.4813%+165000-711250+0.3604-0.2535%+34.3242+0.3727%+0.3727%

Known prime factors:
No known factors for M56325251

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-05-07T16:45:00James Heinrich3930K56500012288750---3.699--3.809%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers21253--2.13035e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers21253--2.13035e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers21254--4.26069e-5--
2000-06-11T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-22T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-09-22T00:00:00ANONYMOUSv4_computers21258--0.001--
2016-02-23T16:40:30Mark RoseManual testing258263--0.028--
2008-07-17T03:31:00Sturle Sundeklengel.ifi263264--0.035--
2008-07-17T12:53:00Sturle Sundecorbusier.ifi264265--0.066--
2008-07-17T22:43:00Sturle Sundecorbusier.ifi265266--0.133--
2008-07-18T10:19:00Sturle Sundecorbusier.ifi266267--0.265--
2009-05-23T06:42:00Charles SpaltonMumXP1267268--0.531--
2011-04-16T08:05:00Xyzzy2268269--1.061--
2011-06-04T19:28:00ANONYMOUS269270--2.123--
2012-01-29T17:37:00TheJudgerManual testing270271--4.245--
2012-01-29T17:37:00TheJudgerManual testing271272--8.491--
2016-01-09T12:03:28ANONYMOUSManual testing272273--16.98--
2018-09-12T05:18:11LaurVManual testing273274--33.96--


ECM factoring results:
No ECM results for M56325251


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2013-05-27T04:12:00pmjenkinsTMCB32037006F76765CEAEE119.4
2021-03-26T15:05:23-Anonymous-37006F76765CEAEE119.4


PRP results:
No PRP results for M56325251


P-1 factor-bounds graph:
B1 = 565000, B2 = 12288750 (P-1 stage 2)
B1 = 565000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
263
258
257
256
254
253
250
260
270
280
290
2100
Last modified: 2021-03-26T15:05:23+00:00