In mathematics, a Cullen number is a natural number of the form n ยท 2n + 1 (written Cn). Cullen numbers were first studied by Fr. James Cullen in 1905. Cullen numbers are special cases of Proth numbers.
Read more about Cullen Number: Properties, Generalizations
Famous quotes containing the words cullen and/or number:
“Ah! never shall the land forget
How gushed the life-blood of her brave—
Gushed, warm with hope and courage yet,
Upon the soil they fought to save.”
—William Cullen Bryant (1794–1878)
“That country is the richest which nourishes the greatest number of noble and happy human beings.”
—John Ruskin (1819–1900)