is 2 2956013 - 1
has 889849 decimal digits
takes 0.252 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF5FC237DDD19DFC7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26710.052067.1642%20482048000.00160.3051%10.053667.2644%0.1002%
PrimeNet2600.052063.3333%120002200000.00292.5083%0.054864.2530%0.9197%
GPU722641.204165.6250%120002000000.00271.3472%1.206866.0881%0.4631%
Difference+3+8.8479+1.5392%-9952+4800-0.0011-1.0421%+8.8468+1.1763%+1.1763%

Known prime factors (1 factor, 62.1 bits, 0.00210063% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
295601349249301968422666311962.095833035950255
3 × 5 × 29 × 1915025173
2009-04-052919150251730.454712.87624.049

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-13T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.305%
2003-12-23T00:00:00Team Prime Ribv4_computers1000010000---0.001--0.177%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-04-15T00:00:00ANONYMOUSv4_computers21259--0.026--
1999-05-02T00:00:00ANONYMOUSv4_computers21260--0.052--
2009-02-13T04:53:00Sturle Sundegraun.ifi260261--0.052--


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)
1999-05-23T00:00:00ANONYMOUSv4_computersF5FC237DDD19DFC70.252


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-26T00:51:36Oliver KruseGTX-2
4924930196842266631
7B89B77AEAD6AC__no
2017-12-09T14:45:53kkmrkkblmbrbkc4.xlarge
4924930196842266631
7B89B77AEAD6AC__no


P-1 factor-bounds graph:
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 2048 (P-1 stage 1)
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
261
260
259
250
260
270
280
290
2100
Last modified: 2017-12-09T14:45:53+00:00