is 2 76505537 - 1
has 23030462 decimal digits
takes 212.914 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
Actual275100.017764.0000 %6650006650002.68351.5545 %102.701264.5596 %
Target27450.007763.5135 %5000009000000021.69484.1932 %71.702565.0435 %
Difference+1+50.0100+0.4865 %+165000-89335000-19.0113-2.6387 %+30.9987-0.4839 %

Known prime factors (1 factor, 97.8 bits, 0.00012784% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
765055372763854967521729008872330789613097.8031806310416147872414040
23 × 32 × 5 × 31 × 97 × 15817 × 172049 × 613169
2016-03-22172049613169631,995,6900.79131.4130

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-03-22NesowaTesting66500066500013097.8032.7191.744%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-15ANONYMOUSv4_computers212502.00000e-6
2000-08-10ANONYMOUSv4_computers212531.57000e-5
2004-03-01markrv4_computers212620.004
2008-03-111997rj7v4_computers212640.026
2010-09-06egwinX2-men2642650.049
2010-09-12SpeedwayDesigner2652660.098
2010-09-13GrunwalderGIMPcompute-0-42662670.195
2010-11-20arnaudSRV-2402672680.391
2010-11-28Dynamo_NEDned_pc2682690.781
2010-12-04David Barleyken22692701.563
2012-11-15DRHManual testing27027321.88
2016-03-16AirSquirrelsManual testing27327575.02


ECM factoring results:
No ECM results for M76505537


Lucas-Lehmer results:
No L-L results for M76505537


PRP results:
No PRP results for M76505537


CERT results:
No CERT results for M76505537


P-1 factor-bounds graph:
B1 = 665000 (P-1 stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
275
273
270
269
268
267
266
265
264
262
253
250
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
290
2100
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00