is 2 625028639 - 1
has 188152369 decimal digits
takes 18,902.776 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
Actual2733.060458.9041 %----3.060458.9041 %
Target2833,134.150363.8554 %36000008000000002,060.62874.3975 %5,194.779165.4449 %
Difference-10-3,131.0899-4.9513 %-3600000-800000000-2,060.6287-4.3975 %-5,191.7187-6.5408 %

Known prime factors (6 factors, 297.0 bits, 0.00004752% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
62502863912500572791030.2191
1
2008-04-06112.289e-134.385e-58.925e-5
6250286391550071024731237.174124
22 × 31
2008-04-064313.008e-110.00020.0004
62502863983066306123111342.9176645
3 × 5 × 443
2008-04-0654431.348e-90.00130.0020
625028639119956296433537931753.4139596064
25 × 3 × 19 × 5261
2014-09-233252612.054e-60.01390.0235
625028639569167034054480354172065.62545531276372
22 × 32 × 281 × 4500917
2019-02-1428145009170.019210.76520.085
6250286392366423156982435601992167.681189305178141
3 × 1307 × 48279821
2023-01-221307482798210.0850115.40215.44

57 Composite Factors:
P-1 results:
No P-1 results for M625028639


Trial Factoring results:
575859606162636465666768697071727374757677787980818283
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2014-09-23TJAOIManual testing253254*
53.413
17
7.93561e-7
2019-02-14TJAOIManual testing265266*
65.625
20
0.007
2023-01-22LordJuliusManual testing267272
30.219
37.174
67.681
10
12
21
0.335
2023-05-04mikrManual testing272273


ECM factoring results:
No ECM results for M625028639


Lucas-Lehmer results:
No L-L results for M625028639


PRP results:
No PRP results for M625028639


CERT results:
No CERT results for M625028639


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
273
272
this exponent TF target: 83
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00