2,961,626

2 × 691 × 2143

Starting at 2,961,626, the Collatz iteration reaches 1 after 169 steps. The first transition is 1480813; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 691 × 2143

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 8

Divisor Sum (σ) 4,450,944

Proper Divisor Sum 1,489,318

Digit Sum / Digital Root 32 (Root: 5)

Adjacent Primes #2961619 ← → #2961659

Radix Representation

Decimal	2961626
Binary	1011010011000011011010 (22 bits)
Octal	0o13230332
Hexadecimal	0x2D30DA

Divisor Catalog (8)

1 2 691 1,382 2,143 4,286 1,480,813 2,961,626

Collatz Trajectory (169 steps to reach 1)

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

2,961,626 1,480,813 4,442,440 2,221,220 1,110,610 555,305 1,665,916 832,958 416,479 1,249,438 624,719 1,874,158 937,079 2,811,238 1,405,619 4,216,858 2,108,429 6,325,288 3,162,644 1,581,322 790,661 2,371,984 1,185,992 592,996 296,498 148,249 444,748 222,374 111,187 333,562 166,781 500,344 250,172 125,086 62,543 187,630 93,815 281,446 140,723 422,170 211,085 633,256 316,628 158,314 79,157 237,472 118,736 59,368 29,684 14,842 7,421 22,264 11,132 5,566 2,783 8,350 4,175 12,526 6,263 18,790

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