山水娱乐

  • REVERSAL-ADDITION PALINDROME TEST ON 13697

    Reverse and Add Process:

    1. Pick a number.
    2. Reverse its digits and add this value to the original number.
    3. If this is not a palindrome, go back to step 2 and repeat.
    Let's view this Reverse and Add sequence starting with 13697:
    13697
    + 79631
    step 1: 93328
    + 82339
    step 2: 175667
    + 766571
    step 3: 942238
    + 832249
    step 4: 1774487
    + 7844771
    step 5: 9619258
    + 8529169
    step 6: 18148427
    + 72484181
    step 7: 90632608
    + 80623609
    step 8: 171256217
    + 712652171
    step 9: 883908388
    + 883809388
    step 10: 1767717776
    + 6777177671
    step 11: 8544895447
    + 7445984458
    step 12: 15990879905
    + 50997809951
    step 13: 66988689856
    + 65898688966
    step 14: 132887378822
    + 228873788231
    step 15: 361761167053
    + 350761167163
    step 16: 712522334216
    + 612433225217
    step 17: 1324955559433
    + 3349555594231
    step 18: 4674511153664
    + 4663511154764
    step 19: 9338022308428
    + 8248032208339
    step 20: 17586054516767
    + 76761545068571
    step 21: 94347599585338
    + 83358599574349
    step 22: 177706199159687
    + 786951991607771
    step 23: 964658190767458
    + 854767091856469
    step 24: 1819425282623927
    + 7293262825249181
    step 25: 9112688107873108
    + 8013787018862119
    step 26: 17126475126735227
    + 72253762157462171
    step 27: 89380237284197398
    + 89379148273208398
    step 28: 178759385557405796
    + 697504755583957871
    step 29: 876264141141363667
    + 766363141141462678
    step 30: 1642627282282826345
    + 5436282822827262461
    step 31: 7078910105110088806
    + 6088800115010198707
    step 32: 13167710220120287513
    + 31578202102201776131
    step 33: 44745912322322063644
    + 44636022322321954744
    step 34: 89381934644644018388
    + 88381044644643918398
    step 35: 177762979289287936786
    + 687639782982979267771
    step 36: 865402762272267204557
    + 755402762272267204568
    step 37: 1620805524544534409125
    + 5219044354454255080261
    step 38: 6839849878998789489386
    13697 takes 38 iterations / steps to resolve into a 22 digit palindrome.

    REVERSAL-ADDITION PALINDROME RECORDS

    Most Delayed Palindromic Number for each digit length
    (Only iteration counts for which no smaller records exist are considered. My program records only the smallest number that resolves for each distinct iteration count. For example, there are 18-digit numbers that resolve in 232 iterations, higher than the 228 iteration record shown for 18-digit numbers, but they were not recorded, as a smaller [17-digit] number already holds the record for 232 iterations.)

    DigitsNumberResult
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    89
    187
    1,297
    10,911
    150,296
    9,008,299
    10,309,988
    140,669,390
    1,005,499,526
    10,087,799,570
    100,001,987,765
    1,600,005,969,190
    14,104,229,999,995
    100,120,849,299,260
    1,030,020,097,997,900
    10,442,000,392,399,960
    170,500,000,303,619,996
    1,186,060,307,891,929,990
    solves in 24 iterations.
    solves in 23 iterations.
    solves in 21 iterations.
    solves in 55 iterations.
    solves in 64 iterations.
    solves in 96 iterations.
    solves in 95 iterations.
    solves in 98 iterations.
    solves in 109 iterations.
    solves in 149 iterations.
    solves in 143 iterations.
    solves in 188 iterations.
    solves in 182 iterations.
    solves in 201 iterations.
    solves in 197 iterations.
    solves in 236 iterations.
    solves in 228 iterations.
    solves in 261 iterations - World Record!
    [View all records]

    This reverse and add program was created by Jason Doucette.
    Please visit my Palindromes and World Records page.
    You have permission to use the data from this webpage (with due credit).
    A link to my website is much appreciated. Thank you.

    (This program has been run 2,061,684 times since Saturday, March 9th, 2002.)
  • 乐投电竞

    皇冠足球盘比分

    mg电子游戏官方网站

    晓风彩票登陆

    彩客网官网

    www.凯发

    吉利彩票公司

    www凯时

    欢腾彩票平台-首页