is 2 1882259 - 1
has 566617 decimal digits
takes 0.102 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26715.786368.6567%500000150000000.10155.0858%15.887870.2508%1.5941%
PrimeNet2570.010263.1579%90001600000.00143.0328%0.011664.2752%1.1173%
GPU722610.163265.5738%100001500000.00141.6918%0.164666.1562%0.5824%
Difference+6+15.6231+3.0829%+490000+14850000+0.1001+3.3940%+15.7232+4.0946%+4.0946%

Known prime factors (4 factors, 238.7 bits, 0.01268172% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
188225927895078391031.377741
3 × 13 × 19
-13191.764e-101.048e-62.081e-6
18822594413237208364593171212168.580117232463979840
26 × 3 × 5 × 11 × 373 × 29762893
2020-10-183732976289345.2780.12760.2382
18822594727933179462968123592168.680125591992904881
23 × 5460521430647
2021-10-2823546052143064753.12223,40243,709
188225912352690758290009018812270.065328134724240660
22 × 5 × 43 × 89 × 1583 × 2708213
2015-08-2715832708213218.790.01170.0217

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
188225912310759788099509021136164115193199.958
1882259131886066663801433909614258220131100.057
1882259344579277029928343933511934515931101.443
188225920865490626267484532314712129658821309843942137.260
188225954515354477906908953009277867507438440460142138.646
188225958402696491764905005894093809472642714727942138.745
188225958204449666554167413703138300711666439309806916332
1
51168.638
188225915207100866198507483667866325114120292047338371672
39
52170.023
188225916291477968251600145903191588532530930877971780200
81
52170.122
188225925774495322628116868174498247329046109013215822080
5148433263759
63207.325
188225971898156748739966085580892480816134933484814090292
4254446147824085106801
72238.703
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-08-27T15:07:00alpertronManual testing50000015000000122270.0650.1010.2040.2035.086%


Trial Factoring results:
No TF results for M1882259


ECM factoring results:

Old Calculation Method

Total ECM effort:19.278 GHz-days
Estimated T-Level:24.464
DigitsB1CurvesCompleteFacMiss
2011000250 / 1002.5008.106%
2550000250 / 2800.89340.883%

New Calculation Method

Total ECM effort:19.278 GHz-days
Estimated T-Level:24.464
DigitsB1CompleteFacMiss
20110008.5580.019%
25500000.77546.059%
302500000.04895.316%
3510000000.00299.780%


ECM Summary

B1B2factorcurvesGHz-days
500005000000241.663
50000500000040.277
500006438386141.082
5000066000001269.85
500006600000826.409


Lucas-Lehmer results:
No L-L results for M1882259


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-04T14:09:32Oliver KruseGTX-0
2789507839
1235269075829000901881
134B5AA5A82C9F__no
2017-11-08T07:31:37kkmrkkblmbrbkc4.xlarge
2789507839
1235269075829000901881
134B5AA5A82C9F__no
2020-10-21T18:46:11arnaudSRV-130
2789507839
441323720836459317121
1235269075829000901881
691E19E76D68E846no
2021-10-29T13:44:00JackBlockWin10
2789507839
441323720836459317121
472793317946296812359
1235269075829000901881
691E19E76D68E846no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
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TF factor-bounds graph:
267
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Last modified: 2021-10-29T13:44:00+00:00