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 A122004 Primes p that divide A123373(p-1). 1
 2, 3, 5, 23, 29 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE A123373 begins {4, 48, 3598, 924780, 287358579128, ...}. a(1) = 2 because 2 divides A123373(1) = 4. a(2) = 3 because 3 divides A123373(2) = 48. a(3) = 5 because 5 divides A123373(4) = 924780. PROG (PARI) is(p) = isprime(p) && sum(j=1, p-1, sum(k=1, p-1, Mod(prime(k), p)^prime(j))) == 0; \\ Jinyuan Wang, Jan 16 2021 (Python) from sympy import nextprime, prime p, A122004_list = 2, [] while p < 10**6:     if 0 == sum(pow(prime(i), prime(j), p) for i in range(1, p) for j in range(1, p)) % p:         A122004_list.append(p)     p = nextprime(p) # Chai Wah Wu, Feb 19 2021 CROSSREFS Cf. A086787, A123373. Sequence in context: A024767 A041195 A042141 * A023231 A034470 A237812 Adjacent sequences:  A122001 A122002 A122003 * A122005 A122006 A122007 KEYWORD nonn,more,hard AUTHOR Alexander Adamchuk, Oct 14 2006 STATUS approved

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Last modified December 4 10:59 EST 2021. Contains 349486 sequences. (Running on oeis4.)