662843

Properties

Appears in sequences

• Primes which are sum of the first k composite numbers and such that the sum of the first k+1 composites is also prime.at n=12A234847
• For 1<=x<=n, 1<=y<=n, write gcd(x,y) = u*x+v*y with u,v minimal; a(n) = n^4*s, where s is the population variance of the values of v.at n=17A345688
• Prime numbersat n=53780