is 2 7291507 - 1
has 2194963 decimal digits
takes 1.590 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
Actual2674.075165.6716 %830000174003984030.222711.9485 %34.297969.7734 %
Target2674.075165.6716 %4500050000000.09962.3153 %4.174766.4664 %
Difference---+785000+1735039840+30.1232+9.6332%+30.1232+3.3069 %

Known prime factors (2 factors, 104.0 bits, 0.00142690% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7291507920582508098571446.3886312704
28 × 24659
-256246591.782e-60.00050.0008
72915072269147356130633271857.65515560208309
3 × 293 × 17702171
2015-07-07293177021710.00380.30500.5696

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2024-01-13Stef42Manual testing8300001740039840
skipped known factor: 92058250809857
skipped known factor: 226914735613063327
--30.2211.948%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2015-07-07TJAOIManual testing257258*
57.655
18
0.002


ECM factoring results:
No ECM results for M7291507


Lucas-Lehmer results:
No L-L results for M7291507


PRP results:
dateuseridcompidcofactorsres64
2018-02-26Oliver KruseGTX-0
92058250809857
226914735613063327
23A7EFB95037E16D
2019-04-29kkmrkkblmbrbkc5.large
92058250809857
226914735613063327
23A7EFB95037E16D


CERT results:
No CERT results for M7291507


P-1 factor-bounds graph:
B1 = 830000, B2 = 1740039840 (P-1 stage 2)
B1 = 830000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
this exponent TF target: 67
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00