is 2 1967429 - 1
has 592256 decimal digits
takes 0.129 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
Actual26715.102968.6567%500000196403361010.246810.0569%25.349771.8089%3.1522%
PrimeNet2580.019563.7931%80001400000.00142.4710%0.021064.6878%0.8947%
GPU722620.312366.1290%80001000000.00121.1956%0.313566.5340%0.4049%
Difference+5+14.7907+2.5277%+492000+1963933610+10.2455+8.8614%+25.0362+5.2749%+5.2749%

Known prime factors (2 factors, 113.7 bits, 0.00578061% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
196742934351113597111341.643872995
5 × 174599
-51745992.918e-70.00090.0017
196742950123419409817625566712272.0861273830451056115
5 × 6719 × 37917263017
2021-08-14671937917263017959.10196.95367.85

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
19674291721795274022233529029946650368208135113.729
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-12T03:19:59Lisander ViaeneDesktop5000001964033610-
skipped known factor: 3435111359711
--10.25--10.057%


Trial Factoring results:
No TF results for M1967429


ECM factoring results:

Old Calculation Method

Total ECM effort:4.304 GHz-days
Estimated T-Level:2.500
DigitsB1CurvesCompleteFacMiss
201100050 / 1000.50060.501%
255000050 / 2800.17983.620%

New Calculation Method

Total ECM effort:4.304 GHz-days
Estimated T-Level:2.500
DigitsB1CompleteFacMiss
20110001.62819.623%
25500000.14886.285%
302500000.00999.095%


ECM Summary

B1B2factorcurvesGHz-days
500005000000131.097
500005000000302.532
50000675000070.674


Lucas-Lehmer results:
No L-L results for M1967429


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-05T09:45:56Oliver KruseGTX-2
3435111359711
5C6A6485CD5DA0__no
2017-11-12T05:25:36kkmrkkblmbrbkold
3435111359711
5C6A6485CD5DA0__no
2021-08-15T04:53:23SRJ2877LTOS
3435111359711
5012341940981762556671
42534055D39CAE47no


P-1 factor-bounds graph:
B1 = 500000, B2 = 1964033610 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
240
250
260
270
280
290
2100
Last modified: 2022-04-12T03:19:59+00:00