In number theory, a Carmichael number is a composite positive integer which satisfies the congruence
for all integers which are relatively prime to (see modular arithmetic). They are named for Robert Carmichael. The Carmichael numbers are the Knödel numbers K1.
Read more about Carmichael Number: Overview, Discovery, Generalizations, Higher-order Carmichael Numbers
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“An impersonal and scientific knowledge of the structure of our bodies is the surest safeguard against prurient curiosity and lascivious gloating.”
—Marie Carmichael Stopes (1880–1958)
“In this world, which is so plainly the antechamber of another, there are no happy men. The true division of humanity is between those who live in light and those who live in darkness. Our aim must be to diminish the number of the latter and increase the number of the former. That is why we demand education and knowledge.”
—Victor Hugo (1802–1885)