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  2. 62 (number) - Wikipedia

    en.wikipedia.org/wiki/62_(number)

    62 is: the eighteenth discrete semiprime ( 2 × 31 {\displaystyle 2\times 31} ) and tenth of the form (2.q), where q is a higher prime. with an aliquot sum of 34 ; itself a semiprime , within an aliquot sequence of seven composite numbers (62, 34 , 20 , 22 , 14 , 10 , 8 , 7 , 1 ,0) to the Prime in the 7 -aliquot tree.

  3. Table of prime factors - Wikipedia

    en.wikipedia.org/wiki/Table_of_prime_factors

    m is a divisor of n (also called m divides n, or n is divisible by m) if all prime factors of m have at least the same multiplicity in n. The divisors of n are all products of some or all prime factors of n (including the empty product 1 of no prime factors). The number of divisors can be computed by increasing all multiplicities by 1 and then ...

  4. List of prime numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_prime_numbers

    2.62 Stern primes. 2.63 Super-primes. 2.64 ... write the prime factorization of n in base 10 and concatenate the factors; iterate until a prime is reached. 2, 3 ...

  5. Prime number - Wikipedia

    en.wikipedia.org/wiki/Prime_number

    The same prime factor may occur more than once; this example has two copies of the prime factor When a prime occurs multiple times, exponentiation can be used to group together multiple copies of the same prime number: for example, in the second way of writing the product above, 5 2 {\displaystyle 5^{2}} denotes the square or second power of 5 ...

  6. Greatest common divisor - Wikipedia

    en.wikipedia.org/wiki/Greatest_common_divisor

    Animation showing an application of the Euclidean algorithm to find the greatest common divisor of 62 and 36, which is 2. A more efficient method is the Euclidean algorithm, a variant in which the difference of the two numbers a and b is replaced by the remainder of the Euclidean division (also called division with remainder) of a by b.

  7. Composite number - Wikipedia

    en.wikipedia.org/wiki/Composite_number

    If none of its prime factors are repeated, it is called squarefree. (All prime numbers and 1 are squarefree.) For example, 72 = 2 3 × 3 2, all the prime factors are repeated, so 72 is a powerful number. 42 = 2 × 3 × 7, none of the prime factors are repeated, so 42 is squarefree. Euler diagram of numbers under 100:

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  9. List of integer sequences - Wikipedia

    en.wikipedia.org/wiki/List_of_integer_sequences

    For n ≥ 2, a(n) is the prime that is finally reached when you start with n, concatenate its prime factors (A037276) and repeat until a prime is reached; a(n) = −1 if no prime is ever reached. A037274: Undulating numbers: 101, 121, 131, 141, 151, 161, 171, 181, 191, 202, ... A number that has the digit form ababab. A046075: Equidigital numbers