is 2 1484803 - 1
has 446971 decimal digits
takes 0.057 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC109776CAFE67D24double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26720.012068.6567%500000150000000.07144.9423%20.083470.2058%1.5491%
PrimeNet2570.012963.1579%65001000000.00062.3356%0.013664.0184%0.8605%
GPU722610.206965.5738%6000500000.00050.9458%0.207365.8994%0.3256%
Difference+6+19.8051+3.0829%+494000+14950000+0.0710+3.9965%+19.8761+4.3064%+4.3064%

Known prime factors (1 factor, 69.7 bits, 0.00469501% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14848039666960675838186197372169.712325530076240356
22 × 3 × 13 × 2086731257951
2010-01-12132086731257951102.996,294.111,756

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers20000270000---0.002--0.964%
2016-03-17T19:14:57alpertronManual testing5000001500000012---0.071--4.942%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-14T00:00:00bezaharv4_computers21257--0.013--
2003-07-30T00:00:00ANONYMOUSv4_computers21258--0.026--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.550 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000299 / 1002.9904.954%
2550000299 / 2801.06834.309%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.550 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.1990.001%
25500001.35125.899%
302500000.11389.347%
3510000000.00899.238%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000024911.84
250000350000005013.71


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-14T00:00:00bezaharv4_computersC109776CAFE67D240.057


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T06:55:00Oliver KruseGTX-3
966696067583818619737
6D24BE68A6012C__no
2017-10-28T15:23:02kkmrkkblmbrbkc4.xlarge
966696067583818619737
6D24BE68A6012C__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 20000, B2 = 270000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-02-24T18:49:52+00:00