1,619,621

29 × 55849

Starting at 1,619,621, the Collatz iteration reaches 1 after 114 steps. The first transition is 4858864; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 29 × 55849

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,675,500

Proper Divisor Sum 55,879

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #1619603 ← → #1619633

Radix Representation

Decimal	1619621
Binary	110001011011010100101 (21 bits)
Octal	0o6133245
Hexadecimal	0x18B6A5

Divisor Catalog (4)

1 29 55,849 1,619,621

Collatz Trajectory (114 steps to reach 1)

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

1,619,621 4,858,864 2,429,432 1,214,716 607,358 303,679 911,038 455,519 1,366,558 683,279 2,049,838 1,024,919 3,074,758 1,537,379 4,612,138 2,306,069 6,918,208 3,459,104 1,729,552 864,776 432,388 216,194 108,097 324,292 162,146 81,073 243,220 121,610 60,805 182,416 91,208 45,604 22,802 11,401 34,204 17,102 8,551 25,654 12,827 38,482 19,241 57,724 28,862 14,431 43,294 21,647 64,942 32,471 97,414 48,707 146,122 73,061 219,184 109,592 54,796 27,398 13,699 41,098 20,549 61,648

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