is 2 1892629 - 1
has 569739 decimal digits
takes 0.103 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
Actual26715.699868.6567%500000290358684012.481210.4322%28.181071.9265%3.2698%
PrimeNet2570.010163.1579%90001600000.00143.0358%0.011564.2764%1.1185%
GPU722610.162365.5738%100001600000.00141.7260%0.163766.1680%0.5942%
Difference+6+15.5375+3.0829%+490000+2903426840+12.4798+8.7062%+28.0173+5.7585%+5.7585%

Known prime factors (2 factors, 96.3 bits, 0.00508590% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1892629348243737928.37692
22 × 23
-4231.927e-113.961e-76.404e-7
18926292719017678985768785612167.88271831766262320
24 × 32 × 5 × 79 × 1262865089
2020-12-0179126286508923.2895.412310.109

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1892629946880877499070491718778224572996.257
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-04-12T07:40:22Lisander ViaeneDesktop5000002903586840-
skipped known factor: 348243737
skipped known factor: 271901767898576878561
--12.48--10.432%


Trial Factoring results:
No TF results for M1892629


ECM factoring results:

Old Calculation Method

Total ECM effort:19.255 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:19.255 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.5620.019%
25500000.77546.055%
302500000.04895.318%
3510000000.00299.780%


ECM Summary

B1B2factorcurvesGHz-days
50000490000070.481
500005000000281.941
50000500000070.485
50000660000020916.35


Lucas-Lehmer results:
No L-L results for M1892629


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-04T16:40:16Oliver KruseGTX-2
348243737
E69F4085E0431C__no
2017-11-08T18:30:01ATHec2-1xf
348243737
E69F4085E0431C__no
2020-12-02T07:39:38Poaopc-Home
348243737
271901767898576878561
F51B04B022197107no


P-1 factor-bounds graph:
B1 = 500000, B2 = 2903586840 (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
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2022-04-12T07:40:22+00:00