10125000

Appears in sequences

• (Nearest integer to n^6/36) / 2.at n=29A061005
• Half totient of 2^n+1.at n=24A063474
• Numbers expressible as A*B^A in two or more different ways, with A, B > 1.at n=12A171606
• a(n) = 648 * n^6.at n=5A185270
• Integers k such that for some m >= 0, psi(k) = rad(k)^m, where psi(k) = A001615(k) and rad(k) = A007947(k).at n=13A356420
• 3-full numbers (A036966) sandwiched between twin primes.at n=9A360840
• a(n) = A000010(A001045(n)).at n=24A366773
• Numbers m of the form 2^i * 3^j * 5^k such that i, j, k > 0 and m+1 and m-1 are both prime numbers.at n=26A386252
• a(n) is the least integer k such that the sum of the prime divisors of k, each taken modulo its exponent in the prime factorization of k, equals n.at n=10A391646