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A089543 Lesser prime factor of semiprimes in A089542. 3
2, 2, 3, 7, 53, 29, 353, 1549, 8353, 7, 15889, 1691419, 347, 67, 1097, 274177, 43, 18882774223, 67, 5197, 1801088543, 556114086547, 44773, 3062989, 5641, 92553847628747, 18349361, 607, 51131, 13217, 42806180589950051 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..31.

CROSSREFS

Cf. A085753, A089542, A089544.

Sequence in context: A053413 A232542 A143673 * A139073 A329955 A099870

Adjacent sequences:  A089540 A089541 A089542 * A089544 A089545 A089546

KEYWORD

nonn

AUTHOR

Ray Chandler, Nov 09 2003

STATUS

approved

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Last modified September 23 20:42 EDT 2021. Contains 347617 sequences. (Running on oeis4.)