63347

Properties

Appears in sequences

• Restricted left truncatable (Henry VIII) primes.at n=18A055521
• Primes p that have exactly three primitive roots that are not primitive roots mod p^2.at n=31A060519
• Numbers k such that the value pi(k), the number of primes <= k, can be obtained deleting some of the repeating adjacent digits of k.at n=10A113898
• Primes p such that pi(p) is obtained by dropping one of the digits of p in decimal expansion.at n=8A114924
• Larger of 3 consecutive prime numbers such that p1*p2*p3*d1*d2=average of twin prime pairs; p1,p2,p3 consecutive prime numbers; d1(delta)=p2-p1, d2(delta)=p3-p2.at n=30A153411
• Primes of the form floor(k+A000217(k-1)*Pi), Pi = A000796, k integer.at n=32A163580
• Primes of the form floor(Pi*k^2).at n=17A227794
• Primes p with same last three digits as k, where prime(k) = p.at n=4A232104
• Primes that are exactly between the nearest square and the nearest triangular number.at n=27A233443
• Left-truncatable primes p with property that prepending any single decimal digit to p does not produce a prime.at n=20A240768
• Primes p such that 10*p-1, 10*p-3, 10*p-7 and 10*p-9 are all prime.at n=20A243408
• Number of n X 3 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.at n=7A269084
• T(n,k)=Number of nXk binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.at n=47A269089
• Primes equal to a centered triangular number plus 1.at n=32A285809
• Main diagonal of A332374.at n=21A332375
• Primes associated with the indices in A362060.at n=8A362066
• Prime numbersat n=6347