is 2 23019371 - 1
has 6929522 decimal digits
takes 17.492 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LEDBE87484DF99BDEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27120.768564.7887%26000053300000.59083.4865%21.359466.0164%1.2277%
PrimeNet2650.316961.5385%11000036000000.33075.3631%0.647763.6012%2.0627%
GPU722695.186463.7681%17000050000000.47733.9914%5.663665.2143%1.4461%
Difference+2+15.5822+1.0206%+90000+330000+0.1136-0.5048%+15.6957+0.8021%+0.8021%

Known prime factors:
No known factors for M23019371

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-01-10T00:00:00ANONYMOUSv4_computers2600005330000---0.591--3.487%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-06-30T00:00:00kutensv4_computers21267--1.291--
2016-02-19T15:20:58VictordeHollanderManual testing267268--1.299--
2017-08-22T09:58:35ramgeisManual testing268269--2.597--
2017-08-22T09:58:35ramgeisManual testing269270--5.194--
2021-04-22T07:29:48yoyorocks1Manual testing270271--10.39--


ECM factoring results:
No ECM results for M23019371


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-02-02T00:00:00ANONYMOUSv4_computersEDBE87484DF99BDE17.49
2010-03-14T07:02:00Sid & AndyHammEDBE87484DF99BDE17.49


PRP results:
No PRP results for M23019371


P-1 factor-bounds graph:
B1 = 260000, B2 = 5330000 (P-1 stage 2)
B1 = 260000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
271
270
269
268
267
250
260
270
280
290
2100
Last modified: 2021-04-22T07:29:48+00:00