Sierpinski number
(number theory) An odd natural number k such that k⨯2ⁿ+1 is composite for all natural numbers n.
(US) Abbreviation of Ohio.
Someone who nibbles. / A tool for cutting sheet metal. / A fish of the sea chub subfamily Girellinae. / (computing, historical) A kind of program for copying protected floppy disks.
Having a single cilium.
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