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A prime number (or prime) is a ... 11, 31, 41, 61, 71, 101, 131, 151, 181, 191 ... The fourth Smarandache-Wellin prime is the 355-digit concatenation of the first 128 ...
The candidate number is split into groups of four, starting with the rightmost four, and added up to produce a 4-digit number. If this 4-digit number is of the form + + + (where a and b are integers from 0 to 9), such as 3232 or 9797, or of the form +, such as 707 and 808, then the number is divisible by 101.
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
An economical number has been defined as a frugal number, but also as a number that is either frugal or equidigital. gcd( m , n ) ( greatest common divisor of m and n ) is the product of all prime factors which are both in m and n (with the smallest multiplicity for m and n ).
These numbers have been proved prime by computer with a primality test for their form, ... 101×2 8152967 + 1 2 December 2023 2,454,290 175 273662×5 3493296 - 1
A binary number may also refer to a rational number that has a finite representation in the binary numeral system, that is, the quotient of an integer by a power of two. The base-2 numeral system is a positional notation with a radix of 2. Each digit is referred to as a bit, or binary digit.
A numerical digit (often shortened to just digit) or numeral is a single symbol used alone (such as "1") or in combinations (such as "15"), to represent numbers in a positional numeral system. The name "digit" comes from the fact that the ten digits ( Latin digiti meaning fingers) [1] of the hands correspond to the ten symbols of the common ...
For double-digit octal numbers this method amounts to multiplying the lead digit by 8 and adding the second digit to get the total. ... Therefore, 51 8 = 101 001 2.