21871365

Appears in sequences

• a(n) is the first term in a chain of at least n consecutive numbers, each having exactly m = 5 distinct prime factors.at n=3A087978
• Numbers k such that k, k+1, and k+2 are each the product of exactly 5 distinct primes.at n=4A192203
• The first term in a run of at least 4 consecutive numbers each with exactly 5 distinct prime factors (i.e. belong to A051270).at n=0A364435
• Square array T(n, k), n > 1 and k >= 1, read by upward antidiagonals, give the smallest number that starts a sequence of exactly k consecutive numbers, each having exactly n distinct prime factors (counted without multiplicity), or -1 if no such number exists.at n=24A375287
• Initial term of first run of exactly n consecutive numbers with exactly 5 distinct prime factors.at n=3A384507