8000 (number) - Selected Numbers in The Range 8001–8999

Selected Numbers in The Range 8001–8999

• 8001 – triangular number
• 8002 – Mertens function zero
• 8011 – Mertens function zero
• 8012 – Mertens function zero
• 8017 – Mertens function zero
• 8021 – Mertens function zero
• 8039 – safe prime
• 8069 – Sophie Germain prime
• 8093 – Sophie Germain prime
• 8100 –
• 8111 – Sophie Germain prime
• 8117 – balanced prime
• 8119 – octahedral number
• 8125 – pentagonal pyramidal number
• 8128 – perfect number, harmonic divisor number, 127th triangular number, 64th hexagonal number, eighth 292-gonal number, fourth 1356-gonal number
• 8147 – safe prime
• 8189 – highly cototient number
• 8190 – harmonic divisor number
• 8191 – Mersenne prime
• 8192 – power of two
• 8233 – centered heptagonal number
• 8243 – Sophie Germain prime
• 8256 – triangular number
• 8257 – sum of the squares of the first fourteen primes
• 8269 – cuban prime of the form x = y + 1
• 8273 – Sophie Germain prime
• 8281 –, sum of the cubes of the first thirteen integers, nonagonal number, centered octagonal number
• 8321 – super-Poulet number
• 8326 – decagonal number
• 8361 – Leyland number
• 8385 – triangular number
• 8423 – safe prime
• 8436 – tetrahedral number
• 8464 –
• 8513 – Sophie Germain prime
• 8515 – triangular number
• 8543 – safe prime
• 8555 – square pyramidal number
• 8576 – centered heptagonal number
• 8625 – enneagonal number
• 8646 – triangular number
• 8649 –, centered octagonal number
• 8663 – Sophie Germain prime
• 8693 – Sophie Germain prime
• 8695 – decagonal number
• 8699 – safe prime
• 8712 – smallest number that is divisible by its reverse: 8712 = 4×2178 (excluding palindromes and numbers with trailing zeros)
• 8713 – balanced prime
• 8741 – Sophie Germain prime
• 8747 – safe prime, balanced prime
• 8751 – perfect totient number
• 8778 – triangular number
• 8783 – safe prime
• 8801 – magic constant of n×n normal magic square and n-Queens Problem for n = 26.
• 8819 – safe prime
• 8833 –
• 8836 –
• 8855 – member of a Ruth-Aaron pair (first definition) with 8856
• 8856 – member of a Ruth-Aaron pair (first definition) with 8855
• 8911 – Carmichael number, triangular number
• 8926 – centered heptagonal number
• 8944 – sum of the cubes of the first seven primes
• 8951 – Sophie Germain prime
• 8963 – safe prime
• 8969 – Sophie Germain prime
• 8976 – enneagonal number