is 2 1004449 - 1
has 302370 decimal digits
takes 0.030 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L6846746D0C97A16Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26729.582370.1493%1000000011100000003.005411.7630%32.587773.6606%3.5114%
PrimeNet2560.009664.2857%4500600000.00031.9405%0.009964.9788%0.6930%
GPU722600.152966.6667%4500160000.00020.5776%0.153166.8592%0.1925%
Difference+7+29.4294+3.4826%+9995500+1109984000+3.0052+11.1854%+32.4346+6.8014%+6.8014%

Known prime factors (1 factor, 62.5 bits, 0.00621837% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
100444963451493507388035591962.4603158522409171
3 × 41 × 2683 × 9571019
2007-09-17268395710190.73670.02250.0419

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-14T00:00:00ANONYMOUSv4_computers500001000000---0.004--1.703%
2003-11-16T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.224%
2006-01-15T00:00:00Jocelyn Larouchev4_computers6000060000---0.003--0.580%
2016-03-17T18:58:57alpertronManual testing3000001000000012-
skipped known factor: 6345149350738803559
--0.036--4.067%
2021-06-21T11:22:46ViliamF3100000001110000000-
skipped known factor: 6345149350738803559
--3.005--11.763%


Trial Factoring results:
No TF results for M1004449


ECM factoring results:

Old Calculation Method

Total ECM effort:17.426 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000325 / 1003.2503.815%
2550000325 / 2801.16131.261%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.426 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002819.77
25000025000000447.652


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-01-21T00:00:00ANONYMOUSv4_computers6846746D0C97A16B0.030


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T16:11:58Oliver KruseGTX-1
6345149350738803559
A745B583E407C3__no
2017-10-15T14:33:38Oliver KruseThreadripper
6345149350738803559
A745B583E407C3__no
2017-12-25T10:48:47ATHec2-1xf
6345149350738803559
A745B583E407C3__no


P-1 factor-bounds graph:
B1 = 10000000, B2 = 1110000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 60000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2021-06-21T11:22:46+00:00