162121

Appears in sequences

• Sum of factorials of digits of n equals the largest prime factor of n.at n=27A074257
• a(n) = Sum_{i=0..n} digsum_8(i)^4, where digsum_8(i) = A053829(i).at n=50A231683
• Least number to start a run of exactly n nondecreasing values of (big) Omega (A001222).at n=8A286288
• a(n) is the smallest number k such that the number of prime divisors (counted with multiplicity) of the n numbers from k through k+n-1 are in nondescending order.at n=8A364804