13 × 15889

Prime Factor Structure

Factorization String 13 × 15889

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 222,460

Proper Divisor Sum 15,903

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #206551 ← → #206593

1 13 15,889 206,557

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

206,557 619,672 309,836 154,918 77,459 232,378 116,189 348,568 174,284 87,142 43,571 130,714 65,357 196,072 98,036 49,018 24,509 73,528 36,764 18,382 9,191 27,574 13,787 41,362 20,681 62,044 31,022 15,511 46,534 23,267 69,802 34,901 104,704 52,352 26,176 13,088 6,544 3,272 1,636 818 409 1,228 614 307 922 461 1,384 692 346 173 520 260 130 65 196 98 49 148 74 37

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