盞ひ计
盞ひ计パㄓ
1982孽吹膀 (Albert Wilansky) 眖ㄤ﹋ひ霉紈盞ひ (Harold Smith) 筿杠腹絏 (4937775) いт计厩艶稰
4937775 = 3*5*5*65837
孽吹膀祇瞷р 4937775 计计羆㎝ (Sum of Digits) 虏癘 SP(4937775) = 4+9+3+7+7+7+5 = 42
タ㎝ㄤ计羆㎝ (Sum of Digits of Prime Divisors) S(4937775) = 3+5+5+(6+5+8+3+7) = 42 单
孽吹膀祇瞷硂М闽玒р硂计嘿盞ひ计 (Smith Number) キ弧┮Τ计常才盞ひ计﹚竡癸盞ひ计莱珹计玥帝ぃ種ǎ璣瓣计厩產籠レ (Richard Kenneth Guy 1916 - ) ㄤ帝计阶いゼ秆∕拜肈い计琌盞ひ计いр盞ひ计﹚竡砰礛计 MathWorld い秆弧玱粄计ぃ妮盞ひ计盞ひ计琌﹚竡计ぇ计琌ぃ琌盞ひ计硂ぃ筁琌ぃ﹚竡Τㄤ龟硂琌ぃ璶セ盞ひ计ぃǎ眔Τぐ或╯基┮и穦帝泊ㄇ盞ひ计┮孔盞ひ计獶疭羘А计 (Composite Number)
10000 ずи碞Τ 376 盞ひ计τ 1010 ず玥笷 241882509
1000 ず盞ひ计
4 |
22 |
27 |
58 |
85 |
94 |
121 |
166 |
202 |
265 |
274 |
319 |
346 |
355 |
378 |
382 |
391 |
438 |
454 |
483 |
517 |
526 |
535 |
562 |
576 |
588 |
627 |
634 |
636 |
645 |
648 |
654 |
663 |
666 |
690 |
706 |
728 |
729 |
762 |
778 |
825 |
852 |
861 |
895 |
913 |
915 |
922 |
958 |
985 |
...... |
(OEIS A006753 )
ㄤい偿脋计 (Beast Number) 666 琌盞ひ计闽 666 ㄆ把嘲酵ゅ
1987计厩產沉うェ焊 (Wayne McDaniel) 靡盞ひ计ョΤ礚ぇ
盞ひ计
渤盞ひ计讽いΤㄇΤㄢи嘿盞ひ计 (Smith Semiprime)(Τ闽计 Semiprime ﹚竡の睱ざ把綷ゅぃ琌计琾计)
1000 ず盞ひ计
4 |
22 |
58 |
85 |
94 |
121 |
166 |
202 |
265 |
274 |
319 |
346 |
355 |
382 |
391 |
454 |
517 |
526 |
535 |
562 |
634 |
706 |
778 |
895 |
913 |
922 |
958 |
985 |
...... |
(OEIS A098837 )
癹ゅ盞ひ计
22121单オ┪オ琌妓计и嘿癹ゅ计 (Palindromic Number)и眖盞ひ计いт 癹ゅ盞ひ计 (Palimdromic Smith Number)
4, 22, 121, 202, 454, 535, 636, 666 单(OEIS A098834 )
Τ硂妓癸 58 ㎝ 85 и嘿癴盞ひ计 (Reversible Smith Number)
58, 85, 265, 319, 562, 913 单(OEIS A104171 )
讽礛癹ゅ计琌癴计 (Reversible Number)栋珿ㄒぃр癹ゅ盞ひ计
(Τ闽ㄢ摸计戈把ゅ癹ゅ计)
盞ひ计
临Τ硂ㄇ
4,
22,
666,
1111,
6666666,
4444444444,
44444444444444444444,
555555555555555555555555555,
55555555555555555555555555555555,
4444444444444444444444444444444444444444444444444444444 单
硂琌盞ひ计 (Repdigit Smith Number)
计Τ贺计㎝硂は嘿獂计 (Pandigital Number) ┮Τ计Τ┮ǎ (冈把ゅ栋霍┮Τ计计 - 獂计) τ 1023465798 ㎝ 9876542103 獽琌ㄢ盞ひ獂计 (Pandigital Smith Number)τ 123456879 ㎝ 987653214 獽琌ㄢ盞ひ箂獂计 (Zeroless Pandigital Smith Number)
╯计よ
盞ひ计疭借㎝ㄤだ秆Α (Prime Factorization) Τ闽ョ㎝ㄤ计羆㎝硈珿盞ひ计╯ ǎ狡馒讽礛иョ虫盞ひ计计计环ゑ计砛╯拜肈砛Τ盞ひ计㎝ 癹ゅ计计ぃ盿ヴ闽玒礛τ眖贝╯盞ひ计㎝硂ㄇぃ﹚竡计闽玒и獽穦癸盞ひ计穦秆
把σゅ膍の呼
Gupta, S. S. "Smith Numbers." From Number Recreations. http://www.shyamsundergupta.com/smith.htm.
Guy, R. K. "Smith Numbers." ”B49 in Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, pp. 103-104, 1994.
Pickover, C. A. "A Brief History of Smith Numbers." Ch. 104 in Wonders of Numbers: Adventures in Mathematics, Mind, and Meaning. Oxford, England: Oxford University Press, pp. 247-248, 2001.
Weisstein, E. W. "Smith Number." From MathWorld. http://mathworld.wolfram.com/SmithNumber.html.