Document Type

Article

Abstract

The twentieth Fermat number, F20 = 22^20 +1, has been proven composite by machine computation.

Rights

Young, J. and Buell, D.A. (1988). The twentieth Fermat number is composite. Mathematics of Computation, 50(181), 261-263.

First published in Mathematics of Computation in 1988, published by the American Mathematical Society.

Copyright ©1988 American Mathematical Society.

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