2214408306

Appears in sequences

• Giuga numbers: composite numbers n such that p divides n/p - 1 for every prime divisor p of n.at n=4A007850
• Numbers m such that (m'-1)' = m+1, where m' denotes the arithmetic derivative of m.at n=10A203617
• Prime power Giuga numbers: composite numbers n > 1 such that -1/n + sum 1/p^k = 1, where the sum is over the prime powers p^k dividing n.at n=29A286497