The book is now available! 97723...32801 (38-digits)
(just those submitted by Broadhurst)
Prime Curios!
Curios: Curios Search:

                                   97723892 8486829239 9456773410 0095132801

Just showing those entries submitted by 'Broadhurst': (Click here to show all)

+ Call this number n. Then for each prime p which divides n, both p-1 and p+1 divide n-1. Hence n passes an infinite number of Lucas pseudoprimality tests, despite being divisible by 16 distinct primes. [Broadhurst]

Prime Curios! © 2000-2017 (all rights reserved)