3² × 13 × 31 × 71

Prime Factor Structure

Factorization String 3^2 × 13 × 31 × 71

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 419,328

Proper Divisor Sum 161,811

Digit Sum / Digital Root 27 (Root: 9)

Adjacent Primes #257503 ← → #257519

1 3 9 13 31 39 71 93 117 213 279 403 639 923 1,209 2,201 2,769 3,627 6,603 8,307 19,809 28,613 85,839 257,517

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

257,517 772,552 386,276 193,138 96,569 289,708 144,854 72,427 217,282 108,641 325,924 162,962 81,481 244,444 122,222 61,111 183,334 91,667 275,002 137,501 412,504 206,252 103,126 51,563 154,690 77,345 232,036 116,018 58,009 174,028 87,014 43,507 130,522 65,261 195,784 97,892 48,946 24,473 73,420 36,710 18,355 55,066 27,533 82,600 41,300 20,650 10,325 30,976 15,488 7,744 3,872 1,936 968 484 242 121 364 182 91 274

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