56437

Properties

Appears in sequences

• Irregular triangle read by rows: the number of hydrocarbon structures that can be drawn with a given number of carbons and units of unsaturation.at n=56A134819
• Primes formed by rearranging five consecutive decimal digits (avoiding leading 0).at n=29A156119
• Primes obtained by merging 5 successive digits in the decimal expansion of sqrt(2) + sqrt(3) + sqrt(5).at n=18A241221
• Primes p such that p^6 - p^5 + 1 and p^6 - p^5 - 1 are both primes.at n=11A243522
• Least prime p such that prime(p*n)-1 is a square, or 0 if no such p exists.at n=45A259764
• Terms k of A112998 such that k+2 is nonsquarefree.at n=30A328160
• Prime numbersat n=5721