login
This site is supported by donations to The OEIS Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A165451 Sum of factorial of digits is prime. 4
2, 10, 11, 12, 13, 20, 21, 30, 31, 100, 101, 110, 111, 122, 133, 134, 135, 136, 143, 153, 155, 163, 178, 187, 202, 212, 220, 221, 303, 304, 305, 306, 313, 314, 315, 316, 330, 331, 340, 341, 350, 351, 360, 361, 403, 413, 430, 431, 503, 505, 513, 515, 530, 531 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

EXAMPLE

1!+3!+5! = 127 and 127 is prime, so 135 appears in the sequence.

PROG

(PARI) digfac(n)=local(s=0); while(n, s=s+((n%10)!); n=n\10); return(s) for(n=1, 1000, if(isprime(digfac(n)), print1(n, ", ")))

CROSSREFS

Cf. A061602.

Sequence in context: A171893 A278816 A043072 * A121717 A217072 A106518

Adjacent sequences:  A165448 A165449 A165450 * A165452 A165453 A165454

KEYWORD

easy,nonn,base

AUTHOR

Rémy Sigrist, Sep 20 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 20 03:32 EST 2019. Contains 319323 sequences. (Running on oeis4.)