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A178552
Primes with exactly three 3's.
5
2333, 3313, 3323, 3331, 3343, 3373, 3433, 3533, 3733, 3833, 5333, 7333, 10333, 13033, 13313, 13331, 13337, 13339, 13633, 13933, 16333, 17333, 19333, 20333, 23339, 23633, 23833, 29333, 30133, 30313, 30323, 31033, 31337, 31393, 32233, 32303, 32323
OFFSET
1,1
LINKS
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Lekraj Beedassy, May 29 2010
EXTENSIONS
Missing a(26) = 23633 and a(27) = 23833 inserted by Daniel Starodubtsev, Mar 14 2020
STATUS
approved