3 × 5 × 13 × 1321

Prime Factor Structure

Factorization String 3 × 5 × 13 × 1321

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 444,192

Proper Divisor Sum 186,597

Digit Sum / Digital Root 33 (Root: 6)

Adjacent Primes #257591 ← → #257611

1 3 5 13 15 39 65 195 1,321 3,963 6,605 17,173 19,815 51,519 85,865 257,595

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

257,595 772,786 386,393 1,159,180 579,590 289,795 869,386 434,693 1,304,080 652,040 326,020 163,010 81,505 244,516 122,258 61,129 183,388 91,694 45,847 137,542 68,771 206,314 103,157 309,472 154,736 77,368 38,684 19,342 9,671 29,014 14,507 43,522 21,761 65,284 32,642 16,321 48,964 24,482 12,241 36,724 18,362 9,181 27,544 13,772 6,886 3,443 10,330 5,165 15,496 7,748 3,874 1,937 5,812 2,906 1,453 4,360 2,180 1,090 545 1,636

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