is 2 152000249 - 1
has 45756635 decimal digits
takes 886.668 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
Actual277201.369263.6364 %1365000136500011.54561.8518 %212.914864.3098 %
Target277201.369263.6364 %100000018000000090.94754.2518 %292.316765.1825 %
Difference---+365000-178635000-79.4019-2.4000 %-79.4019-0.8727 %

Known prime factors (1 factor, 87.0 bits, 0.00005727% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1520002491598145472599042156645070572787.047525704886377864472
23 × 3 × 1117 × 4721 × 7019 × 591791
2018-11-107019591791206,2030.32890.5094

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-11-10KrieselManual testing1365000136500012787.04712.391.852%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-01-15Charles A. Morrischandra2642650.025
2013-01-20Charles A. Morrischandra2652660.049
2014-09-22La GüiraManual testing2662680.295
2014-09-22La GüiraManual testing2682690.393
2014-09-22La GüiraManual testing2692700.787
2014-09-27La GüiraManual testing2702711.573
2016-05-10La GüiraManual testing2712723.146
2017-12-12Choi4KANGManual testing2722736.293
2017-12-28La GüiraManual testing2722736.293
2017-12-28La GüiraManual testing27327412.59
2018-10-23KrieselManual testing27427525.17
2018-10-23KrieselManual testing27527650.34
2018-10-23KrieselManual testing276277100.7


ECM factoring results:
No ECM results for M152000249


Lucas-Lehmer results:
No L-L results for M152000249


PRP results:
No PRP results for M152000249


CERT results:
No CERT results for M152000249


P-1 factor-bounds graph:
B1 = 1365000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
TF factor-bounds graph:
277
276
275
274
273
272
271
270
269
268
266
265
this exponent TF target: 77
TF double-checked to: 67
250
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270
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290
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Last modified: 2024-03-13T02:15:48+00:00