A111185 -id:A111185

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A074301

Numbers n such that (i) the largest prime factor of n is not a palindrome and (ii) the sum of the factorials of the digits of n is equal to the largest prime factor of n reversed.

+10
1

143, 541, 2105, 2444, 3431, 4144, 4233, 4301, 4440, 10234, 12243, 12341, 20313, 22320, 30422, 34030, 34144, 35140, 46003, 52100, 53013, 102613, 106312, 113162, 120032, 134046, 200340, 202124, 203112, 210304, 211232, 212264, 221030, 222224

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..34.

EXAMPLE

2105 = 5.'421' and 2!+1!+0!+5! = 124.

CROSSREFS

See A111185 for another version.

KEYWORD

base,nonn

AUTHOR

Jason Earls, Sep 21 2002

EXTENSIONS

More terms from Jonathan Cross (jcross(AT)juggler.net), Oct 14 2005

STATUS

approved

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