2² × 257 × 281²

Prime Factor Structure

Factorization String 2^2 × 257 × 281^2

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 143,112,858

Proper Divisor Sum 61,940,950

Digit Sum / Digital Root 35 (Root: 8)

Adjacent Primes #81171869 ← → #81171929

1 2 4 257 281 514 562 1,028 1,124 72,217 78,961 144,434 157,922 288,868 315,844 20,292,977 40,585,954 81,171,908

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

81,171,908 40,585,954 20,292,977 60,878,932 30,439,466 15,219,733 45,659,200 22,829,600 11,414,800 5,707,400 2,853,700 1,426,850 713,425 2,140,276 1,070,138 535,069 1,605,208 802,604 401,302 200,651 601,954 300,977 902,932 451,466 225,733 677,200 338,600 169,300 84,650 42,325 126,976 63,488 31,744 15,872 7,936 3,968 1,984 992 496 248 124 62 31 94 47 142 71 214 107 322 161 484 242 121 364 182 91 274 137 412

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.