is 2 242449 - 1
has 72985 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LA0D5FD491B0AB9E7double-checked
PRP1A57BF68B8934ED2PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual267122.557473.1343%12400000050986742106302,261.082924.2212%2,383.640379.6415%6.5072%
PrimeNet2400.000055.0000%2600650000.000013.9534%0.000061.2790%6.2790%
GPU722440.000059.0909%45001100000.000110.1123%0.000163.2277%4.1368%
Difference+23+122.5574+14.0434%+123995500+5098674100630+2,261.0828+14.1089%+2,383.6402+16.4138%+2.3703%

Known prime factors (1 factor, 131.4 bits, 0.05420824% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
242449366074675391645789975254739274081252843940131.4277549519185305895053707269142666731
3 × 172 × 31 × 89 × 193 × 5099 × 14639 × 95564501 × 2292440999
2022-06-039556450122924409996.665e+111.75131.8980

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-11-05T00:00:00ANONYMOUSv4_computers1000004000000---0.003--2.233%
2001-06-09T00:00:00ANONYMOUSv4_computers10000010000000---0.005--2.699%
2002-06-02T00:00:00ANONYMOUSv4_computers327683276800---0.002--1.544%
2002-08-03T00:00:00ANONYMOUSv4_computers655366553600---0.003--2.222%
2003-03-07T00:00:00ANONYMOUSv4_computers13107213107200---0.007--3.029%
2003-10-31T00:00:00ANONYMOUSv4_computers26214426214400---0.014--3.951%
2011-02-03T00:38:00Jocelyn LaroucheManual testing20000002000000---0.016--2.590%
2011-07-24T13:13:00Jocelyn LaroucheManual testing20860812086081---0.017--2.630%
2012-02-26T15:17:00Jocelyn LaroucheManual testing26076012607601---0.021--2.847%
2013-10-12T17:26:00David Campeaui5-2500k264000076560000---0.054--6.395%
2014-12-18T17:28:00thelegendarymudkipi5-4670k10000000250000000---0.188--8.520%
2016-05-13T23:04:25mognutsManual testing271167775---5.08984e-5--0.131%
2019-05-08T00:31:23Alexhome100000000200000000012---1.656--12.503%
2022-06-03T09:41:53Sid & AndyMagic_8_Ball124000000509867421063040131.4272,2610.0034,52224.221%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-11-24T00:00:00ANONYMOUSv4_computers252253--0.002--
2000-04-19T00:00:00ANONYMOUSv4_computers21254--0.010--
2022-03-07T05:44:57LordJuliusManual testing254255--0.010--
2001-02-18T00:00:00ANONYMOUSv4_computers21256--0.040--
2002-04-07T00:00:00ANONYMOUSv4_computers21257--0.079--
2016-02-23T16:28:05Mark RoseManual testing257258--0.079--
2008-12-31T09:08:00Sturle Sundeghibu.ifi258259--0.158--
2009-01-25T16:42:00Sturle Sundefigaro.ifi259260--0.317--
2013-07-18T19:55:00lycornasteroid260261--0.633--
2015-07-31T23:57:00snme2pm1Manual testing261262--1.267--
2016-01-17T11:29:24Gordon SpenceManual testing262263--4.049--
2016-01-17T11:29:24Gordon SpenceManual testing263264--8.098--
2018-03-11T23:50:43Gordon SpenceManual testing264265--15.41--
2019-12-29T20:52:57Gordon SpenceManual testing265266--30.82--


ECM factoring results:
Total ECM effort:19.130 GHz-days
Estimated T-Level:29.859
DigitsB1CompleteFacMiss
201100063.9760.000%
25500009.2320.010%
302500000.97237.841%
3510000000.08092.321%
4030000000.00599.467%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002831.690
2500002500000058417.44


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2016-06-01T06:38:47MadPooManual testingA0D5FD491B0AB9E70.001


PRP results:
dateuseridcompidcofactorsres64PRP
2022-06-03T17:42:28SRJ2877LTOS
3660746753916457899752547392740812528439
1A57BF68B8934ED2no


P-1 factor-bounds graph:
B1 = 124000000, B2 = 5098674210630 (P-1 stage 2)
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 124000000 (P-1 stage 1)
B1 = 100000000 (P-1 stage 1)
B1 = 10000000, B2 = 250000000 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 2640000, B2 = 76560000 (P-1 stage 2)
B1 = 2640000 (P-1 stage 1)
B1 = 2607601 (P-1 stage 1)
B1 = 2086081 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 2711, B2 = 67775 (P-1 stage 2)
B1 = 2711 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-06-03T17:42:28+00:00