202201

Properties

Appears in sequences

• Primes whose decimal expansion is a concatenation of two or more consecutive decreasing numbers (no leading zeros allowed).at n=25A052088
• Primes formed by concatenating k with k-1.at n=23A052089
• Number of nXnXn 0..6 triangular arrays with each element x equal to the number its neighbors equal to 4,4,5,0,0,5,1 for x=0,1,2,3,4,5,6.at n=9A197659
• Smallest of three consecutive primes whose sum is a triangular number.at n=19A226148
• Prime numbersat n=18164