Keith Clusters
A Keith cluster is a related set of Keith numbers such that one is a multiple of another. For example, (14, 28), (1104, 2208), and (31331, 62662, 93993). These are possibly the only three examples of a Keith cluster.
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Famous quotes containing the words keith and/or clusters:
“A turkey is more occult and awful than all the angels and archangels. In so far as God has partly revealed to us an angelic world, he has partly told us what an angel means. But God has never told us what a turkey means. And if you go and stare at a live turkey for an hour or two, you will find by the end of it that the enigma has rather increased than diminished.”
—Gilbert Keith Chesterton (1874–1936)
“Where we such clusters had,
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—Robert Herrick (1591–1674)