Taking 730890, 734784, 734802, 734880, 734970

and 732168, 732360, 732540, 732928

reserving 730260

Done with 733452, 117 digits, 2^3*3. Took a while to gain a driver.

Done with 733752, 106 digits, 2^3*3*5

Reserving 730428, 730656

Members,

I really only dabble in math on occasion and have been looking over aliquot sequences with interest and happened across this forum.

I also dabble in programming.

To the point:

I ran across a couple of new prime factors for iteration 574 of number 730536 while playing with a C++ program I'm writing and playing with. Those factors are:

12541 and 71670491

I really have no easy way to verify my findings, so I don't know if they are valid. My program found them, and in all my latest testing, all my numbers have matched those in Syd's database. My program also gave me all the other factors that the database already shows ( 2^2 5 7 11 113 ). Do new factors get tested when entered? Should I enter them there? Is there a manner to enter the factors and the new unfactored portion or does Syd(?) produce the new portion? If I should enter the factors, should I enter one at a time or both at once?

Sorry for all the questions and apologies if I'm in the wrong forum or "dabbling" where I don't belong.

Take Care,
Ed

P.S. Why does the "Preview Post" button take me to the login screen?

Done with 733776, 101 digits, 2^4*5*31

[quote=Batalov;197849]Taking 730890, 734784, 734802, 734880, 734970
and 732168, 732360, 732540, 732928
[/quote]
Done with these 9.
Taking 730536, 730680, 731208, 731232, 731424, 731500, 731562

[QUOTE=EdH;197960]Members,

I really only dabble in math on occasion and have been looking over aliquot sequences with interest and happened across this forum.

I also dabble in programming.

To the point:

I ran across a couple of new prime factors for iteration 574 of number 730536 while playing with a C++ program I'm writing and playing with. Those factors are:

12541 and 71670491

I really have no easy way to verify my findings, so I don't know if they are valid. My program found them, and in all my latest testing, all my numbers have matched those in Syd's database. My program also gave me all the other factors that the database already shows ( 2^2 5 7 11 113 ). Do new factors get tested when entered? Should I enter them there? Is there a manner to enter the factors and the new unfactored portion or does Syd(?) produce the new portion? If I should enter the factors, should I enter one at a time or both at once?[/quote]

You will see that there is a box saying "Know a factor?" just above the sequence itself. You can enter new factors in here; to put both in at once, just separate them with a *. The database will automatically calculate the unfactored bit. "Syd" is the person who created and maintains the database.

You can also enter factors for a number in a sequence by clicking on that number and entering the factors in the "Report factor(s)" box.

If you want to enter lots of lines from a sequence, then click on "Report factors" (the fourth link at the very top) and enter the lines in there in .ELF format, which looks a bit like this:

[code] 909 . 110017887349050550211876496251418086965837894193558296453154649151308579006289930991115497462322240 = 2^6 * 3 * 5 * 19 * 127 * 47493562365766399974045317141273866800420419858387854180979179250979321645898056961905778363
910 . 260568680563540776817602227963884942813826591511059123178524169042572950278055099715799862418566080 = 2^6 * 3 * 5 * 127 * 191 * 56069921 * 199564803316423397486937509093195838153964313381177235143371098824728218409626350209
911 . 577616660763606296060760160218787407617840677438162270658113805851329328469612301345001418165359680 = 2^6 * 3 * 5 * 53 * 127 * 89389989842334951477733645356495352290682519536188634467716814900480570072180381404602061693
912 . 1305631621876981778643001267815296819483345531265883774053623281905457614163387805681720186742012864 = 2^6 * 3 * 47 * 127 * 248309 * 1073881 * 329699124169 * 5151991975673173 * 2515221643779839280562366149174375699768997856806266941
913 . 2250148724089793345343866075907819150903063532612923572953376100729472393443066295799799375741289536 = 2^6 * 3 * 127 * 2293 * 54888389 * 733198782686096952661057335328156517863121208870463444033366741626503890823923129277
914 . 3752864815208922411070741485466367536371841949028708506174839815176821635540534127854470656989825984 = 2^6 * 3 * 127 * 12245941 * 53112481 * 6156375849097 * 1722979885289611641554999 * 22308166968390776888500400039230646749709377[/code]

[quote]Sorry for all the questions and apologies if I'm in the wrong forum or "dabbling" where I don't belong.[/quote]

This thread is fine if it has anything to do with 700k-800k sequences, although it may have been better to start your own thread.

[quote]P.S. Why does the "Preview Post" button take me to the login screen?[/QUOTE]

Because the forum only keeps you logged on for 15(?) minutes at a time. To stay logged on indefinitely, tick the "Remember Me" box when logging on.

Taking 735096 736794 736820 736938 737550 738072 738288