2177281

Properties

Appears in sequences

• Primes of the form 6*k! + 1.at n=5A062591
• Prime numbers arising from Schorn's proof that there are infinitely many primes.at n=20A104189
• a(n) = 6*n! + 1.at n=9A173314
• Smallest prime factor of the n-th highly totient number (A097942(n)) plus 1.at n=43A209195
• Triangular array read by rows: T(n,k) = n!*k + 1, n >= 1, 1 <= k <= n.at n=41A362777
• Triangular array read by rows: T(n,k) is the least prime factor of n!*k + 1, n >= 1, 1 <= k <= n.at n=41A362778
• Triangular array read by rows: T(n,k) is the greatest prime factor of n!*k + 1, n >= 1, 1 <= k <= n.at n=41A362779
• Primes of the form k!*m! + 1, with k <= m.at n=12A392757
• Prime numbersat n=161132