is 2 3027527 - 1
has 911377 decimal digits
takes 0.258 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L238F7F7649B8D42Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26819.687667.6471%10000001199121000.92297.4627%20.610670.0615%2.4144%
PrimeNet2600.050763.3333%120002200000.00292.5194%0.053664.2571%0.9238%
GPU722641.175765.6250%130002200000.00301.4289%1.178766.1162%0.4912%
Difference+4+18.5120+2.0221%+987000+119692100+0.9200+6.0339%+19.4319+3.9453%+3.9453%

Known prime factors (1 factor, 66.9 bits, 0.00221013% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
30275271388575893507727610872166.91222932510486409
21317 × 1075785077
2009-04-102131710757850777.49487.235813.510

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-23T00:00:00Team Prime Ribv4_computers1000010000---0.001--0.147%
2004-02-07T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.248%
2020-12-19T21:21:04Jocelyn LaroucheManual testing30275230275276---0.056--3.275%
2022-01-22T13:04:25Jocelyn LaroucheManual testing1000000119912100---0.923--7.463%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-04-08T00:00:00ANONYMOUSv4_computers21260--0.051--
2009-01-30T08:02:00Jayson Kingatlas260261--0.051--
2022-03-11T19:04:00LordJuliusManual testing261263--0.426--
2022-03-11T19:04:00LordJuliusManual testing263264--0.648--
2022-03-11T19:04:00LordJuliusManual testing264265--1.234--
2022-03-11T19:04:00LordJuliusManual testing265266--2.468--
2022-03-11T19:04:00LordJuliusManual testing26626766.912212.6170.5235.311
2021-03-20T11:55:02Jocelyn LaroucheManual testing267268--9.87--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-26T00:00:00ANONYMOUSv4_computers238F7F7649B8D42D0.258


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-27T21:13:09Oliver KruseGTX-3
138857589350772761087
B6501513C4D155__no
2017-12-10T16:46:35kkmrkkblmbrbkc4.xlarge
138857589350772761087
B6501513C4D155__no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 119912100 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 302752, B2 = 3027527 (P-1 stage 2)
B1 = 302752 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
268
267
266
265
264
263
261
260
250
260
270
280
290
2100
Last modified: 2022-03-11T19:04:00+00:00