3 × 5 × 13 × 17 × 157

Prime Factor Structure

Factorization String 3 × 5 × 13 × 17 × 157

Distinct Prime Factors 5

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 32

Divisor Sum (σ) 955,584

Proper Divisor Sum 435,129

Digit Sum / Digital Root 21 (Root: 3)

Adjacent Primes #520451 ← → #520529

1 3 5 13 15 17 39 51 65 85 157 195 221 255 471 663 785 1,105 2,041 2,355 2,669 3,315 6,123 8,007 10,205 13,345 30,615 34,697 40,035 104,091 173,485 520,455

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

520,455 1,561,366 780,683 2,342,050 1,171,025 3,513,076 1,756,538 878,269 2,634,808 1,317,404 658,702 329,351 988,054 494,027 1,482,082 741,041 2,223,124 1,111,562 555,781 1,667,344 833,672 416,836 208,418 104,209 312,628 156,314 78,157 234,472 117,236 58,618 29,309 87,928 43,964 21,982 10,991 32,974 16,487 49,462 24,731 74,194 37,097 111,292 55,646 27,823 83,470 41,735 125,206 62,603 187,810 93,905 281,716 140,858 70,429 211,288 105,644 52,822 26,411 79,234 39,617 118,852

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