is 2 76993769 - 1
has 23177434 decimal digits
takes 217.080 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
Actual27449.690663.5135 %7150007150002.92311.8002 %52.613664.1703 %
Target27449.690663.5135 %5000009000000021.97904.1965 %71.669665.0447 %
Difference---+215000-89285000-19.0559-2.3963 %-19.0559-0.8743 %

Known prime factors (1 factor, 75.0 bits, 0.00009743% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
76993769381186234419748250275592375.013247543560583291
72 × 823 × 1567 × 1877 × 2087
2014-09-1318772087110.380.00770.0156

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-09-13Torchwood Institute582071500071500012375.0132.9231.800%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-08-10ANONYMOUSv4_computers212531.56000e-5
2003-09-14ComputerraRUv4_computers212600.001
2004-03-01markrv4_computers212620.004
2022-06-27LordJuliusManual testing262264
2010-09-28garonorth2642650.049
2010-10-01OtmarStueppPTM2652660.097
2010-10-05ANONYMOUSSrvrUID2662670.194
2010-10-08ANONYMOUSSrvrUID2672680.388
2010-10-11ANONYMOUSSrvrUID2682690.776
2010-10-13Aare Vesiv02692701.553
2012-12-16DRHManual testing27027321.74
2014-09-12ChuckManual testing27327424.85


ECM factoring results:
No ECM results for M76993769


Lucas-Lehmer results:
No L-L results for M76993769


PRP results:
No PRP results for M76993769


CERT results:
No CERT results for M76993769


P-1 factor-bounds graph:
B1 = 715000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
274
273
270
269
268
267
266
265
264
262
260
253
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00