On the primality of $n!\pm 1$ and $2\cdot 3\cdot 5\cdots p\pm 1$
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- by Chris K. Caldwell PDF
- Math. Comp. 64 (1995), 889-890 Request permission
Abstract:
For each prime p let p# be the product of the primes less than or equal to p. Using a new type of microcomputer coprocessor, we have found five new primes of the form $n! - 1$, two new primes of the form $p\# + 1$, seven new primes of the form $p\# - 1$, and greatly extended the search bounds for primes of the form $n! \pm 1$ and $p\# \pm 1$.References
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Additional Information
- © Copyright 1995 American Mathematical Society
- Journal: Math. Comp. 64 (1995), 889-890
- MSC: Primary 11A41; Secondary 11A51, 11Y11
- DOI: https://doi.org/10.1090/S0025-5718-1995-1284663-3
- MathSciNet review: 1284663