903983

Appears in sequences

• (Provable) Sierpiński numbers: odd numbers n such that for all k >= 1 the numbers n*2^k + 1 are composite.at n=8A076336
• a(n) = 2^p + 3^p + 5^p + 7^p where p = prime(n).at n=3A098139
• a(n) = 7^n + 5^n + 3^n + 2^n.at n=7A135168
• Sum of the seventh powers of the first n primes.at n=3A236209
• Odd integers m such that for every integer k > 0, m*2^k+1 has a divisor in the set {3, 5, 7, 13, 17, 241}.at n=5A244561