is 2 2535283 - 1
has 763197 decimal digits
takes 0.176 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26711.720267.1642%2000000600000000.51907.6582%12.239169.6788%
Target2630.629565.0794%1100014400000.00891.4356%0.638565.5807%
Difference+4+11.0906+2.0848%+1989000+58560000+0.5100+6.2226%+11.6007+4.0981%

Known prime factors (4 factors, 270.1 bits, 0.01065559% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2535283137580934919511443.6452713325
52 × 108533
-251085336.008e-70.00060.0011
2535283222740498647391211754.3064392813320
23 × 5 × 7 × 15688619
2014-11-158156886190.00130.08600.1606
2535283571396254407203359338872375.59711268885059522021
55213 × 139423 × 1463879
2018-11-2913942314638793,476.10.02130.0285
25352831201533914189230190429548298813096.60123696248390992843608180
22 × 5 × 7 × 73 × 79 × 157 × 929 × 22871 × 8798347
2018-11-292287187983479.399e+90.05040.0900

11 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-11-27alpertronlaptop22000000600000001252172.1980.5190.3521.0387.658%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-11-15TJAOIManual testing254255*54.306170.0000.9810.002


ECM factoring results:
Total ECM effort:0.553 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000060.553


Lucas-Lehmer results:
No L-L results for M2535283


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-14Oliver KruseGTX-032533C1CF557E8__no
2017-12-01kkmrkkblmbrbkold
13758093491951
22274049864739121
32533C1CF557E8__no
2018-11-29Oliver KruseGTX-2
13758093491951
22274049864739121
57139625440720335933887
120153391418923019042954829881
32533C1CF557E8__no
2018-12-24M910888071
13758093491951
22274049864739121
57139625440720335933887
120153391418923019042954829881
32533C1CF557E887no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
255
this exponent TF target: 63
TF double-checked to: 67.9
ECM T-Level=1.15 ~= -13-bit
250
260
270
280
290
2100
Last modified: 2023-06-05T21:50:05+00:00