54547

Properties

Appears in sequences

• Row 5 of square array defined in A047671.at n=10A047674
• Prime number spiral (clockwise, Southwest spoke).at n=37A054568
• n times n+1 gives the concatenation of two numbers m and m+2.at n=6A116301
• Successive prime factors of 10^(10^100) - 10.at n=21A200924
• Primes formed by concatenating k, k, and 7.at n=15A210513
• Primes having only {4, 5, 7} as digits.at n=22A217039
• Numbers n such that (19^n + 18^n)/37 is prime.at n=3A225818
• Odd numbers n containing 65536 as the highest power of 2 in their Collatz (3x+1) iteration.at n=13A247716
• Primes p such that p^2 is the concatenation of two k-digit primes where k is half the length of p^2.at n=44A248046
• Numbers k such that (44*10^k - 161)/9 is prime.at n=19A295824
• Number of partitions such that the least positive integer which is not a part of the partition is prime.at n=45A305937
• Prime numbersat n=5551