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A153425 Numbers n such that n=p*phi(p) where p is product of the digits of n. 0
1, 2, 128, 2612736 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

2612736=(2*6*1*2*7*3*6)*phi(2*6*1*2*7*3*6), so 2612736 is in the sequence.

CROSSREFS

Sequence in context: A024345 A012524 A012670 * A090121 A003369 A099824

Adjacent sequences:  A153422 A153423 A153424 * A153426 A153427 A153428

KEYWORD

base,more,nonn

AUTHOR

Farideh Firoozbakht (mymontain(AT)yahoo.com), Dec 26 2008

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Last modified February 15 11:53 EST 2012. Contains 205778 sequences.