is 2 100521439 - 1
has 30259969 decimal digits
takes 383.378 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
Actual276152.246164.4737 %830000163925009.27903.7416 %161.525065.8029 %
Target276152.246164.4737 %65000011000000036.54143.8429 %188.787565.8389 %
Difference---+180000-93607500-27.2625-0.1013 %-27.2625-0.0360 %

Known prime factors (2 factors, 176.9 bits, 0.00017598% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1005214391362934574740160049968572812786.817677932284047465760
25 × 3 × 5 × 47 × 677 × 5437 × 8163929
2020-10-2654378163929247,0132.48824.5942
10052143913096676662855512980090170392890.0816514369866340409721
3 × 307 × 21523 × 41651 × 7890137
2020-10-264165178901373,218,4612.59514.4401

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-10-26Charlie_TangoMain-283000016392500254176.8989.2793.742%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-02-081997rj7Manual testing2632640.020
2010-08-10sasaki3MATE_J2642650.037
2011-02-17Craig MeyersManual testing2652660.074
2011-03-20Craig MeyersManual testing2662670.149
2013-08-25NoPaGIMPS22672680.297
2013-08-28NoPaGIMPS22682690.595
2013-09-01NoPaGIMPS22692701.189
2014-04-21SRS TechnologyManual testing2702727.137
2020-03-13el groccoGPU72_TF2722739.52
2020-03-18gcardonaManual testing27327419.03
2020-09-04bpotManual testing274276114.2


ECM factoring results:
No ECM results for M100521439


Lucas-Lehmer results:
No L-L results for M100521439


PRP results:
No PRP results for M100521439


CERT results:
No CERT results for M100521439


P-1 factor-bounds graph:
B1 = 830000, B2 = 16392500 (P-1 stage 2)
B1 = 830000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
276
274
273
272
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
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290
2100
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Last modified: 2024-03-13T02:15:48+00:00