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 A046425 Numbers requiring 5 steps to reach a prime under the prime factor concatenation procedure. 0
 14, 34, 147, 164, 183, 214, 216, 230, 236, 248, 252, 276, 285, 309, 324, 335, 404, 405, 444, 482, 484, 486, 508, 520, 527, 540, 550, 570, 580, 633, 636, 638, 658, 689, 704, 730, 738, 802, 814, 852, 915, 935, 954, 959, 960, 981, 996, 1004, 1037, 1046, 1058 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Table of n, a(n) for n=0..50. Patrick De Geest, Home Primes EXAMPLE 14 = 2*7 -> 27 = 3*3*3 -> 333 = 3*3*37 -> 3337 = 47*71 -> 4771 = 13*367 and 13367 is prime. CROSSREFS Cf. A037271, A046411. Sequence in context: A120875 A103533 A269663 * A018950 A159242 A054309 Adjacent sequences: A046422 A046423 A046424 * A046426 A046427 A046428 KEYWORD nonn,base AUTHOR Patrick De Geest, Jun 15 1998 STATUS approved

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Last modified October 3 07:34 EDT 2023. Contains 365843 sequences. (Running on oeis4.)