is 2 1774637 - 1
has 534219 decimal digits
takes 0.096 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
Actual26716.743768.6567%500000150000000.10155.0498%16.845170.2395%1.5828%
PrimeNet2570.010863.1579%80001400000.00122.8099%0.012064.1931%1.0352%
GPU722610.173165.5738%80001200000.00111.4552%0.174266.0747%0.5010%
Difference+6+16.5706+3.0829%+492000+14880000+0.1004+3.5947%+16.6709+4.1648%+4.1648%

Known prime factors (3 factors, 162.2 bits, 0.00913787% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17746372133823528811237.63560120
23 × 32 × 5 × 167
-91671.045e-81.385e-61.441e-6
17746371781414720143476791857.30650190960747
3 × 19 × 433 × 2033587
2015-06-0943320335870.01430.00870.0163
17746371723174434396600173292167.22448550053740472
23 × 34 × 1559 × 48058321
2020-05-1315594805832130.1310.20610.3847

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1774637380122464441063223354013131992994.940
17746373676950152359329224836325307484932104.858
17746373069688302809013403110646608577092939138124.529
1774637655017312664670881530014697719483126824169642547149162.164
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
unknown50000015000000-
skipped known factor: 213382352881
--0.101--5.050%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-06-09T11:51:00TJAOIManual testing257258*57.306180.0030.1960.007


ECM factoring results:

Old Calculation Method

Total ECM effort:17.277 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:17.277 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024917.14
50000500000020.138


Lucas-Lehmer results:
No L-L results for M1774637


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T12:47:53Oliver KruseGTX-0
213382352881
178141472014347679
0D61033DAE84D8__no
2017-11-04T12:09:02kkmrkkblmbrbkc4.xlarge
213382352881
178141472014347679
0D61033DAE84D8__no
2020-05-14T18:38:44mnd9mnd
213382352881
178141472014347679
172317443439660017329
4977151263531611no
2020-05-19T09:18:04AbsolutXTR750D
213382352881
178141472014347679
172317443439660017329
4977151263531611no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (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
TF factor-bounds graph:
267
258
230
240
250
260
270
280
290
2100
Last modified: 2020-10-09T08:35:18+00:00