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A046410
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Palindromes with exactly 4 distinct palindromic prime factors.
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3
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6666, 22888822, 66888866, 413979314, 2228668222, 2668668662, 2888668882, 3315115133, 6668228666, 200446644002, 222266662222, 222446644222, 224488884422, 228866668822, 244666666442, 246664466642, 246686686642
(list; graph; refs; listen; history; internal format)
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