is 2 33853549 - 1
has 10190934 decimal digits
takes 40.060 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L73C6FFB9CF474F75double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27114.122063.3803%600000155000002.42245.0358%16.544465.2244%
Target27114.122063.3803%240000560000005.62443.8381%19.746464.7858%
Difference---+360000-40500000-3.2020+1.1977%-3.2020+0.4386%

Known prime factors (1 factor, 81.6 bits, 0.00024105% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3385354936723564512706012350629692581.60354238869479690316
22 × 33 × 59 × 967 × 12641 × 696349
2015-01-231264169634914,5790.08560.1216

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-07-13ANONYMOUSv4_computers39500010171250---1.592--4.423%
2015-01-23riccardo ubertiXeon12C60000015500000122581.6032.42280.124.8455.036%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-07-13ANONYMOUSv4_computers21268--1.761--
2013-01-03Carsten KossendeyManual testing268269--1.766--
2013-02-03bcp19Manual testing269270--3.532--
2013-02-03bcp19Manual testing270271--7.064--


ECM factoring results:
No ECM results for M33853549


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-11-22ANONYMOUSv4_computers73C6FFB9CF474F7540.06
2005-04-26SRS Technologyv4_computers35474AB2396F2A3A40.06


PRP results:
No PRP results for M33853549


P-1 factor-bounds graph:
B1 = 600000, B2 = 15500000 (P-1 stage 2)
B1 = 395000, B2 = 10171250 (P-1 stage 2)
B1 = 600000 (P-1 stage 1)
B1 = 395000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
271
270
269
268
this exponent TF target: 71
TF double-checked to: 67.8
250
260
270
280
290
Last modified: 2023-06-05T21:50:05+00:00