2,659,668

2² × 3 × 11 × 20149

Starting at 2,659,668, the Collatz iteration reaches 1 after 156 steps. The first transition is 1329834; the starting value is even with 24 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 3 × 11 × 20149

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 6,770,400

Proper Divisor Sum 4,110,732

Digit Sum / Digital Root 42 (Root: 6)

Adjacent Primes #2659663 ← → #2659673

Radix Representation

Decimal	2659668
Binary	1010001001010101010100 (22 bits)
Octal	0o12112524
Hexadecimal	0x289554

Divisor Catalog (24)

1 2 3 4 6 11 12 22 33 44 66 132 20,149 40,298 60,447 80,596 120,894 221,639 241,788 443,278 664,917 886,556 1,329,834 2,659,668

Collatz Trajectory (156 steps to reach 1)

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

2,659,668 1,329,834 664,917 1,994,752 997,376 498,688 249,344 124,672 62,336 31,168 15,584 7,792 3,896 1,948 974 487 1,462 731 2,194 1,097 3,292 1,646 823 2,470 1,235 3,706 1,853 5,560 2,780 1,390 695 2,086 1,043 3,130 1,565 4,696 2,348 1,174 587 1,762 881 2,644 1,322 661 1,984 992 496 248 124 62 31 94 47 142 71 214 107 322 161 484

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