20707

Properties

Appears in sequences

• Numbers that are the sum of 7 nonzero 8th powers.at n=25A003385
• Numbers that are the sum of 3 positive 9th powers.at n=6A003392
• Numbers that are the sum of at most 3 positive 9th powers.at n=15A004887
• Numbers that are the sum of at most 4 positive 9th powers.at n=22A004888
• Numbers that are the sum of at most 5 positive 9th powers.at n=30A004889
• Numbers that are the sum of at most 6 positive 9th powers.at n=39A004890
• Expansion of (1 - 2*x - 2*x^2)/((1 - 2*x)*(1 - 3*x)).at n=10A085279
• Primes of the form prime(n)*prime(n+1) - 4.at n=14A092761
• Primes in A051022.at n=36A092908
• Primes of the form a^5 + b^3 with a,b>0.at n=24A100273
• Prime numbers p for which none of its digits appear in the decimal expansion of p/pi(p).at n=24A117272
• Prime numbers obtained by inserting a 0 between each pair of adjacent digits of a prime number > 10.at n=25A119680
• Smallest prime of the form p^n + q^n + r^n, where p,q,r are primes.at n=9A123601
• Primes for which the period of the reciprocal equals (p-1)/14.at n=19A135073
• Primes congruent to 28 mod 61.at n=38A142826
• Primes of the form 2^k+3^(k-1).at n=7A153133
• Primes that start a run of at least seven consecutive primes, where between successive primes exactly one digit changes and the resulting digits may be permuted.at n=24A157717
• Primes of the form x^2 + 7*y^2, where x and y=x+1 are consecutive natural numbers.at n=25A176616
• Positions of 2 in sequence A217916.at n=24A217918
• Primes of the form x^3 + 2*y^3, with nonnegative x and y.at n=34A219559