1,123,871

7 × 160553

Starting at 1,123,871, the Collatz iteration reaches 1 after 178 steps. The first transition is 3371614; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 7 × 160553

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 1,284,432

Proper Divisor Sum 160,561

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #1123867 ← → #1123873

Radix Representation

Decimal	1123871
Binary	100010010011000011111 (21 bits)
Octal	0o4223037
Hexadecimal	0x11261F

Divisor Catalog (4)

1 7 160,553 1,123,871

Collatz Trajectory (178 steps to reach 1)

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

1,123,871 3,371,614 1,685,807 5,057,422 2,528,711 7,586,134 3,793,067 11,379,202 5,689,601 17,068,804 8,534,402 4,267,201 12,801,604 6,400,802 3,200,401 9,601,204 4,800,602 2,400,301 7,200,904 3,600,452 1,800,226 900,113 2,700,340 1,350,170 675,085 2,025,256 1,012,628 506,314 253,157 759,472 379,736 189,868 94,934 47,467 142,402 71,201 213,604 106,802 53,401 160,204 80,102 40,051 120,154 60,077 180,232 90,116 45,058 22,529 67,588 33,794 16,897 50,692 25,346 12,673 38,020 19,010 9,505 28,516 14,258 7,129

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