is 2 13466917 - 1
has 4053946 decimal digits
takes 5.975 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
Verified Mersenne Prime

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.206464.1791%1250005937500.09682.6352%2.303365.1231%
Target2698.865265.2174%90000110000000.44032.7814%9.305566.1848%
Difference-2-6.6588-1.0383%+35000-10406250-0.3435-0.1461%-7.0022-1.0618%

Known prime factors:
None — M13466917 is prime!

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-10-06ANONYMOUSv4_computers125000593750---0.097--2.635%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-06-11kutensv4_computers21265--0.542--
2002-02-03ANONYMOUSv4_computers21265--0.542--
2002-03-10ANONYMOUSv4_computers21265--0.542--
2002-03-16ANONYMOUSv4_computers21265--0.542--
2002-07-27ANONYMOUSv4_computers21265--0.542--
2002-09-07ANONYMOUSv4_computers21265--0.542--
2002-09-29ANONYMOUSv4_computers21265--0.542--
2002-11-24Criswellv4_computers21265--0.542--
2003-01-09ANONYMOUSv4_computers21265--0.542--
2003-01-16ANONYMOUSv4_computers21265--0.542--


ECM factoring results:
No ECM results for M13466917


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2003-02-16ANONYMOUSv4_computersA82205E3861ECB__5.975


PRP results:
No PRP results for M13466917


P-1 factor-bounds graph:
B1 = 125000, B2 = 593750 (P-1 stage 2)
B1 = 125000 (P-1 stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
265
this exponent TF target: 69
TF double-checked to: 67.9
250
260
270
JSON version of this page
Last modified: 2023-10-02T12:12:48+00:00