λ
Sequence Observatory

2,217,098

2 × 13 × 269 × 317
Deficient Even Composite

Starting at 2,217,098, the Collatz iteration reaches 1 after 179 steps. The first transition is 1108549; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 13 × 269 × 317
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 3,606,120
Proper Divisor Sum 1,389,022
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #2217073 ← → #2217101

Radix Representation

Decimal 2217098
Binary 1000011101010010001010 (22 bits)
Octal 0o10352212
Hexadecimal 0x21D48A

Divisor Catalog (16)

1 2 13 26 269 317 538 634 3,497 4,121 6,994 8,242 85,273 170,546 1,108,549 2,217,098

Collatz Trajectory (179 steps to reach 1)

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

2,217,098 1,108,549 3,325,648 1,662,824 831,412 415,706 207,853 623,560 311,780 155,890 77,945 233,836 116,918 58,459 175,378 87,689 263,068 131,534 65,767 197,302 98,651 295,954 147,977 443,932 221,966 110,983 332,950 166,475 499,426 249,713 749,140 374,570 187,285 561,856 280,928 140,464 70,232 35,116 17,558 8,779 26,338 13,169 39,508 19,754 9,877 29,632 14,816 7,408 3,704 1,852 926 463 1,390 695 2,086 1,043 3,130 1,565 4,696 2,348

More profiles

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