80670

Appears in sequences

• Numbers m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,39.at n=19A064256
• Values of m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,63.at n=13A065699
• Numbers j such that j and 2j are both between a pair of twin primes.at n=25A066388
• Numbers m such that exactly four subsets of {m-1, m, m+1} sum up to a prime number.at n=28A221310