Monday, November 30, 2020

Number of the day: 79103

Properties of the number 79103:

79103 is a cyclic number.
79103 is the 7752th prime.
79103 has 21 antidivisors and 79102 totatives.
79103 has an oblong digit sum 20 in base 10.
Reversing the decimal digits of 79103 results in an emirp.
79103 = 395522 - 395512 is the difference of 2 nonnegative squares in 1 way.
79103 is the difference of 2 positive pentagonal numbers in 1 way.
79103 is not the sum of 3 positive squares.
791032 is the sum of 3 positive squares.
79103 is a proper divisor of 239551 - 1.
79103 = '7' + '9103' is the concatenation of 2 prime numbers.
79103 is an emirp in (at least) the following bases: 2, 6, 7, 10, 15, 17, 23, 24, 27, 29, 41, 49, 52, 55, 58, 59, 65, 67, 69, 73, 76, 77, and 100.

The number 79103 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequence (among others):

Sequence number and description below are taken from OEIS.
A113893: Smallest prime obtained as a concatenation of prime(n) and prime(m) with m > n.

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