is 2 983 - 1
has 296 decimal digits
takes 0.000 GHz-days to do one PRP test
Has been fully factored.
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-
Cofactor is a certified prime

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26730,227.790085.0746%----30,227.790085.0746%
Target2440.002477.2727%500500000.00000.6022%0.002477.4096%
Difference+23+30,227.7876+7.8019%-500-500000.0000-0.6022%+30,227.7876+7.6650%

Known prime factors (2 factor, 983.0 bits, 100.00000000% known):
Remaining cofactor is a certified-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
983180822625791455120996447326086641792920702343140.376919748859569965010154869410410182059617
3 × 11 × 37 × 297793 × 2529525775497982176167486255789		-29779325295257754979821761674862557891.814e+142.637e+184.925e+18
983
click to show decimal representation
254842.624

P-1 results:
No P-1 results for M983


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-16Alex Kruppav4_computers251252--0.305--
1998-05-23Alex Kruppav4_computers251252--0.305--
1998-05-23Alex Kruppav4_computers252253--0.610--
1998-07-21ANONYMOUSv4_computers252254--1.831--


ECM factoring results:
No ECM results for M983


Lucas-Lehmer results:
No L-L results for M983


PRP results:
No PRP results for M983


P-1 factor-bounds graph:
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109
1010
1011
1012
1013
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1020
1021
1022
1023
1024
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1031
TF factor-bounds graph:
254
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252
this exponent TF target: 44
TF double-checked to: 67.9
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Last modified: 2023-10-02T12:12:48+00:00