is 2 1450487 - 1
has 436641 decimal digits
takes 0.055 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L009BDE797ACDBC46double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26720.485568.6567%500000150000000.07144.9283%20.556970.2014%1.5447%
PrimeNet2560.006662.5000%70001200000.00072.9043%0.007363.5891%1.0891%
GPU722600.105965.0000%6500900000.00061.3966%0.106565.4888%0.4888%
Difference+7+20.3796+3.6567%+493500+14910000+0.0708+3.5318%+20.4504+4.7126%+4.7126%

Known prime factors (4 factors, 321.7 bits, 0.02217988% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1450487373692037108050082186072374.98412881605871271169
683 × 126311 × 149316613
2022-01-181263111493166132,699.90.45700.8412
14504872537636507497135322833132477.74887475327510592488
23 × 37 × 2677 × 110394006389
2014-10-26267711039400638927,807332.98621.91
145048715789482457462086191950072580.385544282108611179769
32 × 23 × 23059 × 315551 × 361363
2015-02-03315551361363182,3000.01760.0356
14504874687635035767302223188320412788.599161588316054101216460
22 × 3 × 5 × 3877 × 12575231 × 55239143
2022-01-18125752315523914344,900,9140.82491.4169

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1450487948294555926362103647602072133018138336220499146152.732
14504875900403864410827716543683586383833181141889524947155.370
145048740067967118541373947931564194817729726471901819148158.133
14504871751731885734950376650830277861077416411424398688750163.583
145048711895513800585745835295012493574061904869407403183
3
51166.347
145048774015331164232477410178526586080411047128985881928
7
51168.984
145048714973080255306093639568423977771364957330683635772
346039154330937679937
71233.117
145048744452587845878103981544794530739149252897939080519
89029226513261540916631
73241.331
145048727658939879988978640290605454572719153976020650070
152264420428756203873209
74243.968
145048718782400647684678286405358284533156090735929383033
7859118691550263352657831
75246.732
145048770188335598128466961705116325664272302206981435599
49661214531376109017633910770477805952118461417
97321.716
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers15000243750---0.002--0.839%
2010-07-23T13:54:00Rob_Deetwopc100000200000---0.006--1.216%
2010-07-24T14:59:00Rob_Deetwopc200000300000---0.011--1.519%
2010-07-25T15:20:00Rob_Deetwopc2000001000000---0.013--2.333%
2010-07-26T14:46:00Rob_Deetwopc2000002000000---0.017--2.820%
2010-07-27T14:03:00Rob_Deetwopc2000003000000---0.020--3.111%
2010-07-28T13:48:00Rob_Deetwopc2000004000000---0.023--3.321%
2010-07-29T14:25:00Rob_Deetwopc2000005000000---0.026--3.485%
2015-02-03T11:40:00alpertronManual testing50000015000000122580.3850.0280.1110.0554.928%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-21T00:00:00ANONYMOUSv4_computers21258--0.026--
2010-05-07T00:30:00Architects Cubeda3_bu2260261--0.106--
2011-03-08T05:14:00GrunwalderGIMPManual testing21263--1.100--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.532 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.532 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.2630.000%
25500001.35725.749%
302500000.11389.315%
3510000000.00899.236%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025011.84
50000500000010.047
25000035000000205.460
25000035000000123.276
25000035000000184.914


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-27T00:00:00ANONYMOUSv4_computers009BDE797ACDBC460.055


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T01:36:37Oliver KruseGTX-1
253763650749713532283313
1578948245746208619195007
159DBD32F6867352no
2017-10-05T21:17:54Oliver KruseManual testing
253763650749713532283313
1578948245746208619195007
159DBD32F68673__no
2017-10-27T12:50:14kkmrkkblmbrbkc4.xlarge
253763650749713532283313
1578948245746208619195007
159DBD32F68673__no
2022-01-18T20:06:28SRJ2877LTOS
37369203710805008218607
253763650749713532283313
1578948245746208619195007
468763503576730222318832041
DF7E6E1CAA3C3D60no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 200000, B2 = 5000000 (P-1 stage 2)
B1 = 200000, B2 = 4000000 (P-1 stage 2)
B1 = 200000, B2 = 3000000 (P-1 stage 2)
B1 = 200000, B2 = 2000000 (P-1 stage 2)
B1 = 200000, B2 = 1000000 (P-1 stage 2)
B1 = 200000, B2 = 300000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 100000, B2 = 200000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 15000, B2 = 243750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
102
103
104
105
106
107
108
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
263
261
258
250
260
270
280
290
2100
Last modified: 2022-01-18T20:06:28+00:00