is 2 152000263 - 1
has 45756639 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 %109400010940009.25341.6930 %210.622664.2520 %
Target277201.369263.6364 %100000018000000090.94754.2518 %292.316765.1825 %
Difference---+94000-178906000-81.6941-2.5588 %-81.6941-0.9305 %

Known prime factors (1 factor, 86.3 bits, 0.00005675% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
152000263925574117203881980257582072686.259304464643328900681
11 × 124721 × 410687 × 540373
2021-04-15410687540373103,1023.53357.0696

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-04-15yphysicsManual testing1094000109400012686.2599.2531.693%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-01-28Team_Bundud2642650.025
2013-01-23kiwiboyhp-p4-2600mhz2652660.049
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
2018-12-27mikrManual testing27427525.17
2019-01-11nranksManual testing27527650.34
2019-01-11nranksManual testing276277100.7


ECM factoring results:
No ECM results for M152000263


Lucas-Lehmer results:
No L-L results for M152000263


PRP results:
No PRP results for M152000263


CERT results:
No CERT results for M152000263


P-1 factor-bounds graph:
B1 = 1094000 (P-1 stage 1)
104
105
106
107
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
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00