is 2 5011807 - 1
has 1508705 decimal digits
takes 0.695 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L261766CD9C29FA26double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2675.928865.6716%550009075000.02042.2216%5.949266.4343%0.7626%
PrimeNet2610.061362.2951%220004500000.00913.3145%0.070463.5448%1.2497%
GPU722651.455764.6154%340007000000.01412.4170%1.469865.4706%0.8552%
Difference+2+4.4731+1.0563%+21000+207500+0.0063-0.1954%+4.4793+0.9637%+0.9637%

Known prime factors (1 factor, 63.9 bits, 0.00127451% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5011807169259198958386670232063.8761688604518873
61 × 97 × 285381869
2014-05-12972853818690.55703.12505.8366

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-05-20T00:00:00ANONYMOUSv4_computers25000200000---0.007--1.187%
2009-08-05T08:40:00harleeP4_260055000907500---0.020--2.222%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-23T00:00:00ANONYMOUSv4_computers21261--0.061--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.632 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.632 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000030.632


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-28T00:00:00ANONYMOUSv4_computers4A8A9D653CA39B__0.695
2000-07-03T00:00:00ANONYMOUSv4_computers568EA93C28D943__0.695
2001-06-03T00:00:00ANONYMOUSv4_computers261766CD9C29FA260.695


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-22T05:00:25kkmrkkblmbrbkc4.xlarge
16925919895838667023
3B0C7835240DBC__no
2018-04-24T09:19:39ATHec2-PRPCFDC
16925919895838667023
3B0C7835240DBC__no


P-1 factor-bounds graph:
B1 = 55000, B2 = 907500 (P-1 stage 2)
B1 = 55000 (P-1 stage 1)
B1 = 25000, B2 = 200000 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
261
250
260
270
280
290
2100
Last modified: 2018-04-24T09:19:39+00:00