2089951

Properties

Appears in sequences

• Larger of super amicable pair m < n defined by sigma(sigma(m)) = sigma(sigma(n)) = m + n.at n=4A324256
• Primes p such that there exists prime q < p such that sigma(p+1) = sigma(q+1) = p + q.at n=3A385586
• Prime numbersat n=155130