is 2 148999141 - 1
has 44853211 decimal digits
takes 854.417 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
Actual27312.838061.6438 %2215000221500018.41743.3277 %31.255362.9202 %
Target277205.425163.6364 %90000017000000084.08834.1438 %289.513465.1432 %
Difference-4-192.5872-1.9925 %+1315000-167785000-65.6709-0.8161 %-258.2581-2.2230 %

Known prime factors (1 factor, 79.7 bits, 0.00005350% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1489991419881588412299702434742712479.7093315988382879235
3 × 5 × 7 × 19 × 946111 × 1756823
2020-09-149461111756823821.708.234016.010

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-09-14timbitManual testing2215000221500012479.70918.422.222%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-01-08sasaki3mate_ma12642650.025
2013-01-07Charles A. Morrischandra2652660.050
2015-03-14karhumizquitl2662670.100
2016-04-05DerekManual testing2672680.201
2016-12-14d3zorggen3-dev-vc5-22682690.401
2016-12-16d3zorggen3-dev-vc5-22692700.802
2016-12-17d3zorggen3-dev-vc5-22702711.605
2016-12-19guruManual testing2712723.210
2016-12-22Sid & AndyMrs_Potato_Head2722736.420


ECM factoring results:
No ECM results for M148999141


Lucas-Lehmer results:
No L-L results for M148999141


PRP results:
No PRP results for M148999141


CERT results:
No CERT results for M148999141


P-1 factor-bounds graph:
B1 = 2215000 (P-1 stage 1)
104
105
106
107
104
105
106
107
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
this exponent TF target: 77
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00