What is a factor of 6

Happy birthday, Kathy! I hope your day is wonderful. You have grown into a beautiful, talented, prayerful, intelligent, hard-working, and loving young woman.  I am grateful you are my daughter.  So for your birthday today and for this blog, I’ve created three special puzzles: the first is a birthday cake to celebrate your happy day. To highlight your love of music, the second puzzle is a quarter note. The third puzzle is either a violin, a guitar, or a ukulele, you decide. I love listening as you sing or as you play any of those instruments or the piano. Today for your birthday I will also cut down a tree and make yet another cake with two birthday candles on top in this blog post.  So have a fun birthday, today.  I love you.

What is a factor of 6

Click 12 Factors 2013-11-14 for more puzzles.

What is a factor of 6

Factor Trees vs. Factor Cakes:

What did I mean by cutting down a tree and making yet another cake? Today I will discuss two methods for finding the prime factors of a whole number. One method is making a factor tree and the other is the cake method. To factor a number means to write it as the product of two or more factors. When those two or more factors are all prime factors, it is called a prime factorization of the number. A composite number always has more than two factors. A prime number always has exactly 2 factors, 1 and itself. (ZERO and ONE are neither prime or composite numbers.) Usually, to find the prime factors of a number, a person will usually make a factor tree. The following example shows how this is done:

What is a factor of 6

From this example, you can certainly understand why this algorithm is called a factor tree.  It looks exactly like a perfectly-shaped evergreen tree.  The problem is that a factor tree doesn’t always look so neat and trim.  Here is a factor tree that even Charlie Brown wouldn’t choose:

What is a factor of 6

720 isn’t even that big of a number, but gathering all of the prime numbers from the factor tree and putting them in numerical order would be like picking up a bunch of scattered leaves. It would be like doing . . . yard work.  Imagine if you had a number that had many more factors. If one or two of the factors gets lost in the mess, your answer wouldn’t be correct. Notice that some of the prime factors of 720 (2,2,2,2,3,3,5) are not as easy to see as others on the factor tree.  That is why I want to chop down that tree. Even if you like to do yard work, do you really want to deal with that big of a mess, . . . especially when you can have cake instead?  Look, the cake method is so much more pleasing to the eye, and it is simply an extension of the very familiar division algorithm:

What is a factor of 6

With the cake method, the more factors you have, the bigger the cake will be, but it will always be neatly organized with all the factors on the outside of the cake.  And if the largest prime factor of your given number is eleven, you will also have two candles on top of your cake!  I find using the cake method to be much less confusing than using a factor tree.  Yes, finding prime factors can actually be a piece of cake. The only disadvantage to the cake method is that since you work from the bottom up you have to leave enough space for the cake to rise.

Still, in spite of my opinion, it is best to use whichever method you are more comfortable with.

Now if your appetite for cake has not been satisfied, click on one of the links below for a nice variety of cakes shared by other bloggers.

  • Another Surprise Rainbow Cake (seraphinacakes.wordpress.com)
  • The Case for Cake (benmo45.wordpress.com)
  • “Birthday cake” (smilingmushrooms.wordpress.com)
  • In Search of The Best Chocolate Cake (lavaletteerica.wordpress.com)

Factors of the Number 6:

What is a factor of 6

6 is a composite number. 6 = 1 x 6 or 2 x 3. Factors of 6: 1, 2, 3, 6. Prime factorization: 2 x 3.

What is a factor of 6

When 6 is a clue in the FIND THE FACTORS  puzzle, the pair that will work for that particular puzzle might be 1 x 6, or it might be 2 x 3.

A Sum-Difference Puzzle Featuring the Number 6 and its Factors:

Look at the factor pair puzzle above. Perhaps you will notice that 2 + 3 = 5 and 6 – 1 = 5.

Those are the facts you need to complete the Sum-Difference puzzle below.

What is a factor of 6

Here are the factors (not including negatives), and some multiples, for 1 to 100:

Factors   Multiples
11 2345678910
1, 22 468101214161820
1, 33 6912151821242730
1, 2, 44 81216202428323640
1, 55 101520253035404550
1, 2, 3, 66 121824303642485460
1, 77 142128354249566370
1, 2, 4, 88 162432404856647280
1, 3, 99 182736455463728190
1, 2, 5, 1010 2030405060708090100
1, 1111 2233445566778899110
1, 2, 3, 4, 6, 1212 24364860728496108120
1, 1313 263952657891104117130
1, 2, 7, 1414 284256708498112126140
1, 3, 5, 1515 3045607590105120135150
1, 2, 4, 8, 1616 3248648096112128144160
1, 1717 34516885102119136153170
1, 2, 3, 6, 9, 1818 36547290108126144162180
1, 1919 38577695114133152171190
1, 2, 4, 5, 10, 2020 406080100120140160180200
1, 3, 7, 2121 426384105126147168189210
1, 2, 11, 2222 446688110132154176198220
1, 2323 466992115138161184207230
1, 2, 3, 4, 6, 8, 12, 2424 487296120144168192216240
1, 5, 2525 5075100125150175200225250
1, 2, 13, 2626 5278104130156182208234260
1, 3, 9, 2727 5481108135162189216243270
1, 2, 4, 7, 14, 2828 5684112140168196224252280
1, 2929 5887116145174203232261290
1, 2, 3, 5, 6, 10, 15, 3030 6090120150180210240270300
1, 3131 6293124155186217248279310
1, 2, 4, 8, 16, 3232 6496128160192224256288320
1, 3, 11, 3333 6699132165198231264297330
1, 2, 17, 3434 68102136170204238272306340
1, 5, 7, 3535 70105140175210245280315350
1, 2, 3, 4, 6, 9, 12, 18, 3636 72108144180216252288324360
1, 3737 74111148185222259296333370
1, 2, 19, 3838 76114152190228266304342380
1, 3, 13, 3939 78117156195234273312351390
1, 2, 4, 5, 8, 10, 20, 4040 80120160200240280320360400
1, 4141 82123164205246287328369410
1, 2, 3, 6, 7, 14, 21, 4242 84126168210252294336378420
1, 4343 86129172215258301344387430
1, 2, 4, 11, 22, 4444 88132176220264308352396440
1, 3, 5, 9, 15, 4545 90135180225270315360405450
1, 2, 23, 4646 92138184230276322368414460
1, 4747 94141188235282329376423470
1, 2, 3, 4, 6, 8, 12, 16, 24, 4848 96144192240288336384432480
1, 7, 4949 98147196245294343392441490
1, 2, 5, 10, 25, 5050 100150200250300350400450500
1, 3, 17, 5151 102153204255306357408459510
1, 2, 4, 13, 26, 5252 104156208260312364416468520
1, 5353 106159212265318371424477530
1, 2, 3, 6, 9, 18, 27, 5454 108162216270324378432486540
1, 5, 11, 5555 110165220275330385440495550
1, 2, 4, 7, 8, 14, 28, 5656 112168224280336392448504560
1, 3, 19, 5757 114171228285342399456513570
1, 2, 29, 5858 116174232290348406464522580
1, 5959 118177236295354413472531590
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 6060 120180240300360420480540600
1, 6161 122183244305366427488549610
1, 2, 31, 6262 124186248310372434496558620
1, 3, 7, 9, 21, 6363 126189252315378441504567630
1, 2, 4, 8, 16, 32, 6464 128192256320384448512576640
1, 5, 13, 6565 130195260325390455520585650
1, 2, 3, 6, 11, 22, 33, 6666 132198264330396462528594660
1, 6767 134201268335402469536603670
1, 2, 4, 17, 34, 6868 136204272340408476544612680
1, 3, 23, 6969 138207276345414483552621690
1, 2, 5, 7, 10, 14, 35, 7070 140210280350420490560630700
1, 7171 142213284355426497568639710
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 7272 144216288360432504576648720
1, 7373 146219292365438511584657730
1, 2, 37, 7474 148222296370444518592666740
1, 3, 5, 15, 25, 7575 150225300375450525600675750
1, 2, 4, 19, 38, 7676 152228304380456532608684760
1, 7, 11, 7777 154231308385462539616693770
1, 2, 3, 6, 13, 26, 39, 7878 156234312390468546624702780
1, 7979 158237316395474553632711790
1, 2, 4, 5, 8, 10, 16, 20, 40, 8080 160240320400480560640720800
1, 3, 9, 27, 8181 162243324405486567648729810
1, 2, 41, 8282 164246328410492574656738820
1, 8383 166249332415498581664747830
1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 8484 168252336420504588672756840
1, 5, 17, 8585 170255340425510595680765850
1, 2, 43, 8686 172258344430516602688774860
1, 3, 29, 8787 174261348435522609696783870
1, 2, 4, 8, 11, 22, 44, 8888 176264352440528616704792880
1, 8989 178267356445534623712801890
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 9090 180270360450540630720810900
1, 7, 13, 9191 182273364455546637728819910
1, 2, 4, 23, 46, 9292 184276368460552644736828920
1, 3, 31, 9393 186279372465558651744837930
1, 2, 47, 9494 188282376470564658752846940
1, 5, 19, 9595 190285380475570665760855950
1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 9696 192288384480576672768864960
1, 9797 194291388485582679776873970
1, 2, 7, 14, 49, 9898 196294392490588686784882980
1, 3, 9, 11, 33, 9999 198297396495594693792891990
1, 2, 4, 5, 10, 20, 25, 50, 100100 2003004005006007008009001000

See the numbers with only two factors, such as 97? They are prime numbers.

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