40849

Properties

Appears in sequences

• Primes having only 0,4,6,8,9 as digits.at n=39A061372
• 30 'Reverse and Add' steps are needed to reach a palindrome.at n=16A065319
• Triangle read by rows: T(n,k) = 1 + n! - k! - (n - k)! + k!*(n - k)!.at n=40A155453
• Prime numbers such that, in base 10, all their proper prefixes and suffixes represent composites.at n=32A254754
• Smallest of 4 consecutive prime numbers that when represented as a simple continued fraction, generates prime numbers in the numerator and denominator, when reduced.at n=30A270884
• a(n) is the least prime p such that (p^2-2*n)/(2*n-1) and (p^2+2*n)/(2*n+1) are both prime, or 0 if such p does not exist.at n=11A344463
• Lesser of 2 successive primes (k, k+4) sandwiching 3 consecutive nonsquarefree numbers.at n=27A366352
• Primes having only {0, 4, 8, 9} as digits.at n=20A386076
• Prime numbersat n=4278