31 × 21521

Prime Factor Structure

Factorization String 31 × 21521

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 688,704

Proper Divisor Sum 21,553

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #667141 ← → #667171

1 31 21,521 667,151

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

667,151 2,001,454 1,000,727 3,002,182 1,501,091 4,503,274 2,251,637 6,754,912 3,377,456 1,688,728 844,364 422,182 211,091 633,274 316,637 949,912 474,956 237,478 118,739 356,218 178,109 534,328 267,164 133,582 66,791 200,374 100,187 300,562 150,281 450,844 225,422 112,711 338,134 169,067 507,202 253,601 760,804 380,402 190,201 570,604 285,302 142,651 427,954 213,977 641,932 320,966 160,483 481,450 240,725 722,176 361,088 180,544 90,272 45,136 22,568 11,284 5,642 2,821 8,464 4,232

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