is 2 83536237 - 1
has 25146914 decimal digits
takes 260.674 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L2D3589DDCF2E01__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276183.201964.4737 %640000102400005.26243.2117 %188.464265.6147 %
Target27591.599964.0000 %5500009500000025.77233.9357 %117.372165.4169 %
Difference+1+91.6020+0.4737 %+90000-84760000-20.5099-0.7240 %+71.0921+0.1978 %

Known prime factors:
No known factors for M83536237

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-10-10One ManQ955064000010240000--5.2623.545%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-20Architects Cubedm1_572642650.045
2012-08-10Carsten KossendeyManual testing2652660.089
2013-02-22Choi4KANGmantoman942662670.179
2013-06-12Juergen KampmeierManual testing2672680.358
2013-06-17frmargnu0232682690.716
2013-06-21frmargnu0232692701.431
2013-07-24willmoreManual testing2702712.863
2016-12-25Judge HaleManual testing27127317.18
2017-01-17Brian BeuningManual testing27327568.70
2017-03-10ANONYMOUSManual testing27527691.60


ECM factoring results:
No ECM results for M83536237


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2018-11-18curtiscjckl122022l2D3589DDCF2E01__260.7


PRP results:
No PRP results for M83536237


CERT results:
No CERT results for M83536237


P-1 factor-bounds graph:
B1 = 640000, B2 = 10240000 (P-1 stage 2)
B1 = 640000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
275
273
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00