7392937

Properties

Appears in sequences

• First palindromic prime pyramids with a(1)=2 such that (number of digits in a(n+1)) = (number of digits in a(n)) + 2.at n=3A070922
• Palindromic primes in which deleting the outside pair of digits yields a prime at every stage until finally a single-digit prime is obtained.at n=23A071119
• Palindromic primes with digit sum = 40.at n=13A109185
• Prime numbersat n=501518