is 2 56200901 - 1
has 16918157 decimal digits
takes 119.115 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
Actual2692.124362.3188 %----2.124362.3188 %
Target27334.035864.3836 %4000006500000012.04574.0612 %46.081565.8300 %
Difference-4-31.9115-2.0647 %-400000-65000000-12.0457-4.0612 %-43.9572-3.5112 %

Known prime factors (1 factor, 76.5 bits, 0.00013607% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
562009011048828649873384059930632476.473933106615028631
32 × 463 × 2917 × 2927 × 26227
2011-10-31292726227293.000.01290.0183

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-10-31Eric ChristensonHP_DC7900_SFF_PC2476.4732.0130.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-15ANONYMOUSv4_computers212532.14000e-5
2000-03-08ANONYMOUSv4_computers212544.27000e-5
2000-05-31ANONYMOUSv4_computers212560.000
2001-09-22ANONYMOUSv4_computers212570.000
2002-09-14ANONYMOUSv4_computers212580.001
2004-10-031997rj7v4_computers212600.001
2022-06-27LordJuliusManual testing260263
2008-07-06Sturle Sundetristan.ifi2632640.033
2008-07-06Sturle Sundenardi.ifi2642660.199
2008-07-08Sturle Sundenardi.ifi2662670.266
2009-11-30lindedLKLPRH02672680.532
2011-04-18OS1L12682691.064


ECM factoring results:
No ECM results for M56200901


Lucas-Lehmer results:
No L-L results for M56200901


PRP results:
No PRP results for M56200901


CERT results:
No CERT results for M56200901


P-1 factor-bounds graph:
102
103
104
102
103
104
105
TF factor-bounds graph:
269
268
267
266
264
263
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00