login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A053652
Primes for which some rearrangement of the digits (leading zeros not allowed) is the product of two consecutive primes.
2
53, 233, 347, 431, 743, 1237, 1249, 1327, 1367, 1429, 1471, 1571, 1583, 1637, 1723, 1741, 2137, 2371, 2713, 2731, 3167, 3217, 3271, 3581, 3617, 3671, 3761, 3851, 3863, 3877, 4129, 4219, 5171, 5381, 5399, 5477, 5657, 5711, 5813, 5939
OFFSET
1,1
COMMENTS
Primes from A053736 sorted in numerical order.
REFERENCES
C. A. Pickover, "Vampire numbers," chapter 30 of Keys to Infinity. NY: Wiley, 1995. Pages 227-231
EXAMPLE
a(3)=347, a(5)=743. These terms are derived from 19*23=437. By arranging digits of 437, two primes are formed: 347 and 743.
CROSSREFS
KEYWORD
easy,nonn,base
AUTHOR
Enoch Haga, Feb 18 2000
EXTENSIONS
Edited by Jens Kruse Andersen, Dec 01 2006
STATUS
approved